[INFO] updating cached repository https://github.com/usey11/basic_shell
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b925f1e61b9ce78c1a394e8a9362ec04c1c7d77f
[INFO] checking usey11/basic_shell against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusey11%2Fbasic_shell" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/usey11/basic_shell on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/usey11/basic_shell
[INFO] finished tweaking git repo https://github.com/usey11/basic_shell
[INFO] tweaked toml for git repo https://github.com/usey11/basic_shell written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/usey11/basic_shell already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 38e4d371fb62b26e02bd6a38a9faec04b95f83a73e7c5df4f80ba2c066182ddd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "38e4d371fb62b26e02bd6a38a9faec04b95f83a73e7c5df4f80ba2c066182ddd"`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking basic_shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/main.rs:76:25
[INFO] [stderr]    |
[INFO] [stderr] 76 |                         ;
[INFO] [stderr]    |                         ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `flush` found for struct `std::io::Stdout` in the current scope
[INFO] [stderr]     --> src/main.rs:23:22
[INFO] [stderr]      |
[INFO] [stderr] 23   |         io::stdout().flush().unwrap();
[INFO] [stderr]      |                      ^^^^^ method not found in `std::io::Stdout`
[INFO] [stderr]      |
[INFO] [stderr]      = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]      |
[INFO] [stderr] 3    | use std::io::Write;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `flush` found for struct `std::io::Stdout` in the current scope
[INFO] [stderr]     --> src/main.rs:57:18
[INFO] [stderr]      |
[INFO] [stderr] 57   |     io::stdout().flush().unwrap();
[INFO] [stderr]      |                  ^^^^^ method not found in `std::io::Stdout`
[INFO] [stderr]      |
[INFO] [stderr]      = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]      |
[INFO] [stderr] 3    | use std::io::Write;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/main.rs:76:25
[INFO] [stderr]    |
[INFO] [stderr] 76 |                         ;
[INFO] [stderr]    |                         ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `basic_shell`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0599]: no method named `flush` found for struct `std::io::Stdout` in the current scope
[INFO] [stderr]     --> src/main.rs:23:22
[INFO] [stderr]      |
[INFO] [stderr] 23   |         io::stdout().flush().unwrap();
[INFO] [stderr]      |                      ^^^^^ method not found in `std::io::Stdout`
[INFO] [stderr]      |
[INFO] [stderr]      = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]      |
[INFO] [stderr] 3    | use std::io::Write;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `flush` found for struct `std::io::Stdout` in the current scope
[INFO] [stderr]     --> src/main.rs:57:18
[INFO] [stderr]      |
[INFO] [stderr] 57   |     io::stdout().flush().unwrap();
[INFO] [stderr]      |                  ^^^^^ method not found in `std::io::Stdout`
[INFO] [stderr]      |
[INFO] [stderr]      = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]      |
[INFO] [stderr] 3    | use std::io::Write;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `basic_shell`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "38e4d371fb62b26e02bd6a38a9faec04b95f83a73e7c5df4f80ba2c066182ddd"`
[INFO] running `"docker" "rm" "-f" "38e4d371fb62b26e02bd6a38a9faec04b95f83a73e7c5df4f80ba2c066182ddd"`
[INFO] [stdout] 38e4d371fb62b26e02bd6a38a9faec04b95f83a73e7c5df4f80ba2c066182ddd