[INFO] cloning repository https://github.com/tasnuva1/Building-Shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tasnuva1/Building-Shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftasnuva1%2FBuilding-Shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftasnuva1%2FBuilding-Shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12f425c1feb44b3bfaf957070980ba5bbd70c2e9
[INFO] checking tasnuva1/Building-Shell against master#c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3 for pr-141352
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftasnuva1%2FBuilding-Shell" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tasnuva1/Building-Shell on toolchain c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tasnuva1/Building-Shell
[INFO] finished tweaking git repo https://github.com/tasnuva1/Building-Shell
[INFO] tweaked toml for git repo https://github.com/tasnuva1/Building-Shell written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tasnuva1/Building-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" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1997bbc3c056a190854e664498762cb7ea2311f4c7594811a70828209f6d8aa0
[INFO] running `Command { std: "docker" "start" "-a" "1997bbc3c056a190854e664498762cb7ea2311f4c7594811a70828209f6d8aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1997bbc3c056a190854e664498762cb7ea2311f4c7594811a70828209f6d8aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1997bbc3c056a190854e664498762cb7ea2311f4c7594811a70828209f6d8aa0", kill_on_drop: false }`
[INFO] [stdout] 1997bbc3c056a190854e664498762cb7ea2311f4c7594811a70828209f6d8aa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11dbe5c4c8b298061f9e46c304a18cf76bd860c0d3a9d25387527981754863e9
[INFO] running `Command { std: "docker" "start" "-a" "11dbe5c4c8b298061f9e46c304a18cf76bd860c0d3a9d25387527981754863e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.92
[INFO] [stderr]     Checking shell-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Command` and `Stdio`
[INFO] [stdout]  --> src/main.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::{Command, Stdio};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Command` and `Stdio`
[INFO] [stdout]  --> src/main.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::{Command, Stdio};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         stdout.write(e.as_bytes()).context("stdout write error");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         let _ = stdout.write(e.as_bytes()).context("stdout write error");
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         stdout.write(e.as_bytes()).context("stdout write error");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         let _ = stdout.write(e.as_bytes()).context("stdout write error");
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         stdout.write(b" ").context("stdout write error");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         let _ = stdout.write(b" ").context("stdout write error");
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         stdout.write(b" ").context("stdout write error");
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         let _ = stdout.write(b" ").context("stdout write error");
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "11dbe5c4c8b298061f9e46c304a18cf76bd860c0d3a9d25387527981754863e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11dbe5c4c8b298061f9e46c304a18cf76bd860c0d3a9d25387527981754863e9", kill_on_drop: false }`
[INFO] [stdout] 11dbe5c4c8b298061f9e46c304a18cf76bd860c0d3a9d25387527981754863e9