[INFO] cloning repository https://github.com/mdibaiee/rust-shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdibaiee/rust-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Frust-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Frust-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f539e4c8f1cfccf840c145d856bee997d3f26ac7
[INFO] checking mdibaiee/rust-shell against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Frust-shell" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdibaiee/rust-shell on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mdibaiee/rust-shell
[INFO] finished tweaking git repo https://github.com/mdibaiee/rust-shell
[INFO] tweaked toml for git repo https://github.com/mdibaiee/rust-shell written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mdibaiee/rust-shell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8496113d98c20d19ccb83c653392c534f1af5b85359ce55999ff2de16cd06b3f
[INFO] running `Command { std: "docker" "start" "-a" "8496113d98c20d19ccb83c653392c534f1af5b85359ce55999ff2de16cd06b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8496113d98c20d19ccb83c653392c534f1af5b85359ce55999ff2de16cd06b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8496113d98c20d19ccb83c653392c534f1af5b85359ce55999ff2de16cd06b3f", kill_on_drop: false }`
[INFO] [stdout] 8496113d98c20d19ccb83c653392c534f1af5b85359ce55999ff2de16cd06b3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05bd537036e159580d3361759cacb85501dc2b978680aaa20bd0a742ad096170
[INFO] running `Command { std: "docker" "start" "-a" "05bd537036e159580d3361759cacb85501dc2b978680aaa20bd0a742ad096170", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/commands/echo.rs:23:51
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let message: String = params.iter().map(|x| x.as_ref()).collect();
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let message: String = params.iter().map(|x| <String as AsRef<T>>::as_ref(x)).collect();
[INFO] [stdout]    |                                                 +++++++++++++++++++++++++++++ ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/commands/echo.rs:23:51
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let message: String = params.iter().map(|x| x.as_ref()).collect();
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let message: String = params.iter().map(|x| <String as AsRef<T>>::as_ref(x)).collect();
[INFO] [stdout]    |                                                 +++++++++++++++++++++++++++++ ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-shell` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust-shell` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "05bd537036e159580d3361759cacb85501dc2b978680aaa20bd0a742ad096170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05bd537036e159580d3361759cacb85501dc2b978680aaa20bd0a742ad096170", kill_on_drop: false }`
[INFO] [stdout] 05bd537036e159580d3361759cacb85501dc2b978680aaa20bd0a742ad096170