[INFO] crate liner 0.4.4 is already in cache [INFO] extracting crate liner 0.4.4 into work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/liner/0.4.4 [INFO] extracting crate liner 0.4.4 into work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/liner/0.4.4 [INFO] validating manifest of liner-0.4.4 on toolchain master#1891bfa80364eead426517c68de6947b7692e2de [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of liner-0.4.4 on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing liner-0.4.4 [INFO] finished frobbing liner-0.4.4 [INFO] frobbed toml for liner-0.4.4 written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/liner/0.4.4/Cargo.toml [INFO] started frobbing liner-0.4.4 [INFO] finished frobbing liner-0.4.4 [INFO] frobbed toml for liner-0.4.4 written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/liner/0.4.4/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking liner-0.4.4 against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-1/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/liner/0.4.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] bb20046e4a6402b0c10c1f7693ca2bcc745deeec3027b5cd38987ccf76d7de6d [INFO] running `"docker" "start" "-a" "bb20046e4a6402b0c10c1f7693ca2bcc745deeec3027b5cd38987ccf76d7de6d"` [INFO] [stderr] Checking liner v0.4.4 (/opt/crater/workdir) [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/editor.rs:225:27 [INFO] [stderr] | [INFO] [stderr] 225 | let cols = max(1, (w as usize / (max_word_size))); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/editor.rs:225:27 [INFO] [stderr] | [INFO] [stderr] 225 | let cols = max(1, (w as usize / (max_word_size))); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/editor.rs:575:21 [INFO] [stderr] | [INFO] [stderr] 575 | let mut buf = self.current_buffer_mut(); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/context.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | mut handler: &mut EventHandler>, [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/context.rs:91:9 [INFO] [stderr] | [INFO] [stderr] 91 | mut handler: &mut EventHandler>, [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning[E0503]: cannot use `self.key_bindings` because it was mutably borrowed [INFO] [stderr] --> src/context.rs:98:17 [INFO] [stderr] | [INFO] [stderr] 96 | let ed = try!(Editor::new_with_init_buffer(stdout, prompt, self, buffer)); [INFO] [stderr] | ---- borrow of `*self` occurs here [INFO] [stderr] 97 | match self.key_bindings { [INFO] [stderr] 98 | KeyBindings::Emacs => Self::handle_keys(keymap::Emacs::new(ed), handler), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ use of borrowed `*self` [INFO] [stderr] 99 | KeyBindings::Vi => Self::handle_keys(keymap::Vi::new(ed), handler), [INFO] [stderr] | -- borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/context.rs:109:9 [INFO] [stderr] | [INFO] [stderr] 109 | mut handler: &mut EventHandler, [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/editor.rs:575:21 [INFO] [stderr] | [INFO] [stderr] 575 | let mut buf = self.current_buffer_mut(); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/context.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | mut handler: &mut EventHandler>, [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/context.rs:91:9 [INFO] [stderr] | [INFO] [stderr] 91 | mut handler: &mut EventHandler>, [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning[E0503]: cannot use `self.key_bindings` because it was mutably borrowed [INFO] [stderr] --> src/context.rs:98:17 [INFO] [stderr] | [INFO] [stderr] 96 | let ed = try!(Editor::new_with_init_buffer(stdout, prompt, self, buffer)); [INFO] [stderr] | ---- borrow of `*self` occurs here [INFO] [stderr] 97 | match self.key_bindings { [INFO] [stderr] 98 | KeyBindings::Emacs => Self::handle_keys(keymap::Emacs::new(ed), handler), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ use of borrowed `*self` [INFO] [stderr] 99 | KeyBindings::Vi => Self::handle_keys(keymap::Vi::new(ed), handler), [INFO] [stderr] | -- borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/context.rs:109:9 [INFO] [stderr] | [INFO] [stderr] 109 | mut handler: &mut EventHandler, [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.63s [INFO] running `"docker" "inspect" "bb20046e4a6402b0c10c1f7693ca2bcc745deeec3027b5cd38987ccf76d7de6d"` [INFO] running `"docker" "rm" "-f" "bb20046e4a6402b0c10c1f7693ca2bcc745deeec3027b5cd38987ccf76d7de6d"` [INFO] [stdout] bb20046e4a6402b0c10c1f7693ca2bcc745deeec3027b5cd38987ccf76d7de6d