[INFO] cloning repository https://github.com/Rigellute/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/Rigellute/rust-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRigellute%2Frust-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRigellute%2Frust-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4784e8dedf84234408a400620f6ce42572c61ff0
[INFO] checking Rigellute/rust-shell against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRigellute%2Frust-shell" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rigellute/rust-shell on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Rigellute/rust-shell
[INFO] finished tweaking git repo https://github.com/Rigellute/rust-shell
[INFO] tweaked toml for git repo https://github.com/Rigellute/rust-shell written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Rigellute/rust-shell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 403d8740fff0249d77d5bed2b3b6d185f4bb9a7c2e736f3dfb75cb8509866664
[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" "403d8740fff0249d77d5bed2b3b6d185f4bb9a7c2e736f3dfb75cb8509866664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "403d8740fff0249d77d5bed2b3b6d185f4bb9a7c2e736f3dfb75cb8509866664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "403d8740fff0249d77d5bed2b3b6d185f4bb9a7c2e736f3dfb75cb8509866664", kill_on_drop: false }`
[INFO] [stdout] 403d8740fff0249d77d5bed2b3b6d185f4bb9a7c2e736f3dfb75cb8509866664
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ed4e54fa9ba5ec107a3ce441e096b77b6594b0a8ea9b63372fbfde33f4cc823
[INFO] running `Command { std: "docker" "start" "-a" "5ed4e54fa9ba5ec107a3ce441e096b77b6594b0a8ea9b63372fbfde33f4cc823", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking colored v1.6.1
[INFO] [stderr]     Checking shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 36 |                         child.wait();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 36 |                         child.wait();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "5ed4e54fa9ba5ec107a3ce441e096b77b6594b0a8ea9b63372fbfde33f4cc823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ed4e54fa9ba5ec107a3ce441e096b77b6594b0a8ea9b63372fbfde33f4cc823", kill_on_drop: false }`
[INFO] [stdout] 5ed4e54fa9ba5ec107a3ce441e096b77b6594b0a8ea9b63372fbfde33f4cc823