[INFO] updating cached repository stay-on-main/rust-fs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/stay-on-main/rust-fs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/stay-on-main/rust-fs" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/stay-on-main/rust-fs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/stay-on-main/rust-fs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/stay-on-main/rust-fs" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/stay-on-main/rust-fs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/stay-on-main/rust-fs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 857fc3a08d492625fe61f95bb587cd42e0ed4654
[INFO] sha for GitHub repo stay-on-main/rust-fs: 857fc3a08d492625fe61f95bb587cd42e0ed4654
[INFO] validating manifest of stay-on-main/rust-fs on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of stay-on-main/rust-fs on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing stay-on-main/rust-fs
[INFO] finished frobbing stay-on-main/rust-fs
[INFO] frobbed toml for stay-on-main/rust-fs written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/stay-on-main/rust-fs/Cargo.toml
[INFO] started frobbing stay-on-main/rust-fs
[INFO] finished frobbing stay-on-main/rust-fs
[INFO] frobbed toml for stay-on-main/rust-fs written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/stay-on-main/rust-fs/Cargo.toml
[INFO] crate stay-on-main/rust-fs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking stay-on-main/rust-fs against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/stay-on-main/rust-fs:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a1c893347841249953b11263dd636f725195603c0ef15b12332e51be29b165a3
[INFO] running `"docker" "start" "-a" "a1c893347841249953b11263dd636f725195603c0ef15b12332e51be29b165a3"`
[INFO] [stderr]     Checking rust-fs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/main.rs:149:29
[INFO] [stderr]     |
[INFO] [stderr] 149 |     fn file_open(&mut self, path: &str) -> Option<File> {
[INFO] [stderr]     |                             ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:154:30
[INFO] [stderr]     |
[INFO] [stderr] 154 |     fn file_write(&mut self, file: &File, data: &[u8]) -> Option<usize> {
[INFO] [stderr]     |                              ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:158:29
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn file_read(&mut self, file: File, data: &mut [u8]) -> Option<usize> {
[INFO] [stderr]     |                             ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:162:30
[INFO] [stderr]     |
[INFO] [stderr] 162 |     fn file_close(&mut self, file: File) -> bool {
[INFO] [stderr]     |                              ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] error[E0594]: cannot assign to `file.index`, as `file` is not declared as mutable
[INFO] [stderr]    --> src/main.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     let file = fs.file_open("hello.txt").unwrap();
[INFO] [stderr]     |         ---- help: consider changing this to be mutable: `mut file`
[INFO] [stderr] ...
[INFO] [stderr] 173 |     file.index = 0;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ cannot assign
[INFO] [stderr] 
[INFO] [stderr] error[E0382]: assign to part of moved value: `file`
[INFO] [stderr]    --> src/main.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     let file = fs.file_open("hello.txt").unwrap();
[INFO] [stderr]     |         ---- move occurs because `file` has type `File`, which does not implement the `Copy` trait
[INFO] [stderr] ...
[INFO] [stderr] 172 |     fs.file_close(file);
[INFO] [stderr]     |                   ---- value moved here
[INFO] [stderr] 173 |     file.index = 0;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ value partially assigned here after move
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0382`.
[INFO] [stderr] error: Could not compile `rust-fs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/main.rs:149:29
[INFO] [stderr]     |
[INFO] [stderr] 149 |     fn file_open(&mut self, path: &str) -> Option<File> {
[INFO] [stderr]     |                             ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:154:30
[INFO] [stderr]     |
[INFO] [stderr] 154 |     fn file_write(&mut self, file: &File, data: &[u8]) -> Option<usize> {
[INFO] [stderr]     |                              ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:158:29
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn file_read(&mut self, file: File, data: &mut [u8]) -> Option<usize> {
[INFO] [stderr]     |                             ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:162:30
[INFO] [stderr]     |
[INFO] [stderr] 162 |     fn file_close(&mut self, file: File) -> bool {
[INFO] [stderr]     |                              ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] error[E0594]: cannot assign to `file.index`, as `file` is not declared as mutable
[INFO] [stderr]    --> src/main.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     let file = fs.file_open("hello.txt").unwrap();
[INFO] [stderr]     |         ---- help: consider changing this to be mutable: `mut file`
[INFO] [stderr] ...
[INFO] [stderr] 173 |     file.index = 0;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ cannot assign
[INFO] [stderr] 
[INFO] [stderr] error[E0382]: assign to part of moved value: `file`
[INFO] [stderr]    --> src/main.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     let file = fs.file_open("hello.txt").unwrap();
[INFO] [stderr]     |         ---- move occurs because `file` has type `File`, which does not implement the `Copy` trait
[INFO] [stderr] ...
[INFO] [stderr] 172 |     fs.file_close(file);
[INFO] [stderr]     |                   ---- value moved here
[INFO] [stderr] 173 |     file.index = 0;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ value partially assigned here after move
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0382`.
[INFO] [stderr] error: Could not compile `rust-fs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a1c893347841249953b11263dd636f725195603c0ef15b12332e51be29b165a3"`
[INFO] running `"docker" "rm" "-f" "a1c893347841249953b11263dd636f725195603c0ef15b12332e51be29b165a3"`
[INFO] [stdout] a1c893347841249953b11263dd636f725195603c0ef15b12332e51be29b165a3