diff --git a/env/rust.scm b/env/rust.scm
index 8c9837e..7177697 100644
--- a/env/rust.scm
+++ b/env/rust.scm
@@ -79,7 +79,10 @@ function."
   (let* ((_         (reload-module (resolve-module '(guix scripts environment))))
          (launch    (@@ (guix scripts environment) launch-environment/container))
          (setup-fhs (@@ (guix scripts environment) setup-fhs))
-         (tcgrp (tcgetpgrp (current-input-port))))
+         (tcgrp (catch 'system-error
+                  ;; catching ioctl for some types of prompts.
+                  (λ () (tcgetpgrp (current-input-port)))
+                  (const #f))))
     ;; during launch-environment/container does at least one fork take place,
     ;; for some reason when child exits this process receives SIGTTOU and
     ;; SIGTTIN signals which put it to wait. Looks like a side-effect of hacks
@@ -105,7 +108,10 @@ function."
            ;; for the terminal used by input port changed after child
            ;; exits.  That causes input/output error when we jump back to
            ;; the prompt.
-           (tcsetpgrp (current-input-port) tcgrp)
+           (when tcgrp
+             ;; only setting it back when there were no ioctl error (see let*
+             ;; form above)
+             (tcsetpgrp (current-input-port) tcgrp))
            ;; Why not?
            (flush-all-ports)))))