[INFO] cloning repository https://github.com/aitrs/starlight
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aitrs/starlight" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faitrs%2Fstarlight", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faitrs%2Fstarlight'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c672d95c2067ff8b870eacb53b91971e28e6df7d
[INFO] checking aitrs/starlight against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faitrs%2Fstarlight" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aitrs/starlight on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aitrs/starlight
[INFO] finished tweaking git repo https://github.com/aitrs/starlight
[INFO] tweaked toml for git repo https://github.com/aitrs/starlight written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/aitrs/starlight already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91f14accef596e225a340889feb0e2d02d5708bdc1d9d5f25bafd37d041ace03
[INFO] running `Command { std: "docker" "start" "-a" "91f14accef596e225a340889feb0e2d02d5708bdc1d9d5f25bafd37d041ace03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91f14accef596e225a340889feb0e2d02d5708bdc1d9d5f25bafd37d041ace03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f14accef596e225a340889feb0e2d02d5708bdc1d9d5f25bafd37d041ace03", kill_on_drop: false }`
[INFO] [stdout] 91f14accef596e225a340889feb0e2d02d5708bdc1d9d5f25bafd37d041ace03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76c83d58fbd75314f74f8b8843bae271d26ef9aaf20e32dc3b5d467930bd065e
[INFO] running `Command { std: "docker" "start" "-a" "76c83d58fbd75314f74f8b8843bae271d26ef9aaf20e32dc3b5d467930bd065e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking starlight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/stars.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 | /         &self.0.iter().for_each(|s| {
[INFO] [stdout] 46 | |             ret.push(if *s == 1 {
[INFO] [stdout] 47 | |                 '1'
[INFO] [stdout] 48 | |             } else {
[INFO] [stdout] 49 | |                 '0'
[INFO] [stdout] 50 | |             });
[INFO] [stdout] 51 | |         });
[INFO] [stdout]    | |__________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = &self.0.iter().for_each(|s| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/stars.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 | /         &self.0.iter().for_each(|s| {
[INFO] [stdout] 46 | |             ret.push(if *s == 1 {
[INFO] [stdout] 47 | |                 '1'
[INFO] [stdout] 48 | |             } else {
[INFO] [stdout] 49 | |                 '0'
[INFO] [stdout] 50 | |             });
[INFO] [stdout] 51 | |         });
[INFO] [stdout]    | |__________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = &self.0.iter().for_each(|s| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "76c83d58fbd75314f74f8b8843bae271d26ef9aaf20e32dc3b5d467930bd065e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c83d58fbd75314f74f8b8843bae271d26ef9aaf20e32dc3b5d467930bd065e", kill_on_drop: false }`
[INFO] [stdout] 76c83d58fbd75314f74f8b8843bae271d26ef9aaf20e32dc3b5d467930bd065e