[INFO] cloning repository https://github.com/usey11/basic_shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/usey11/basic_shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusey11%2Fbasic_shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusey11%2Fbasic_shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b925f1e61b9ce78c1a394e8a9362ec04c1c7d77f
[INFO] checking usey11/basic_shell against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusey11%2Fbasic_shell" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/usey11/basic_shell on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2/source/Cargo.toml
[INFO] crate git repo https://github.com/usey11/basic_shell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v1.1.0
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded nix v0.15.0
[INFO] [stderr]   Downloaded cc v1.0.38
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded void v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d222b18c2a8c3c3c98300b750d7285e95055747175c09c4f0d8b8b08b240888
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8d222b18c2a8c3c3c98300b750d7285e95055747175c09c4f0d8b8b08b240888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d222b18c2a8c3c3c98300b750d7285e95055747175c09c4f0d8b8b08b240888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d222b18c2a8c3c3c98300b750d7285e95055747175c09c4f0d8b8b08b240888", kill_on_drop: false }`
[INFO] [stdout] 8d222b18c2a8c3c3c98300b750d7285e95055747175c09c4f0d8b8b08b240888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de6b9a51f404fbfe9e4b8a0b0bb1076f6c65ba340247e2802aa957e723305728
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "de6b9a51f404fbfe9e4b8a0b0bb1076f6c65ba340247e2802aa957e723305728", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking basic_shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:76:25
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         ;
[INFO] [stdout]    |                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:76:25
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         ;
[INFO] [stdout]    |                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]     --> src/main.rs:23:22
[INFO] [stdout]      |
[INFO] [stdout] 23   |         io::stdout().flush().unwrap();
[INFO] [stdout]      |                      ^^^^^ method not found in `Stdout`
[INFO] [stdout]      |
[INFO] [stdout]      = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]      |
[INFO] [stdout] 3    | use std::io::Write;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]     --> src/main.rs:57:18
[INFO] [stdout]      |
[INFO] [stdout] 57   |     io::stdout().flush().unwrap();
[INFO] [stdout]      |                  ^^^^^ method not found in `Stdout`
[INFO] [stdout]      |
[INFO] [stdout]      = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]      |
[INFO] [stdout] 3    | use std::io::Write;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]     --> src/main.rs:23:22
[INFO] [stdout]      |
[INFO] [stdout] 23   |         io::stdout().flush().unwrap();
[INFO] [stdout]      |                      ^^^^^ method not found in `Stdout`
[INFO] [stdout]      |
[INFO] [stdout]      = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]      |
[INFO] [stdout] 3    | use std::io::Write;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]     --> src/main.rs:57:18
[INFO] [stdout]      |
[INFO] [stdout] 57   |     io::stdout().flush().unwrap();
[INFO] [stdout]      |                  ^^^^^ method not found in `Stdout`
[INFO] [stdout]      |
[INFO] [stdout]      = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]      |
[INFO] [stdout] 3    | use std::io::Write;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "de6b9a51f404fbfe9e4b8a0b0bb1076f6c65ba340247e2802aa957e723305728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de6b9a51f404fbfe9e4b8a0b0bb1076f6c65ba340247e2802aa957e723305728", kill_on_drop: false }`
[INFO] [stdout] de6b9a51f404fbfe9e4b8a0b0bb1076f6c65ba340247e2802aa957e723305728