[INFO] cloning repository https://github.com/damiencarol/polilith
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/damiencarol/polilith" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdamiencarol%2Fpolilith", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdamiencarol%2Fpolilith'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6c5511f0a18da753a2e725bf1f57ce382e44909
[INFO] checking damiencarol/polilith against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdamiencarol%2Fpolilith" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/damiencarol/polilith
[INFO] finished tweaking git repo https://github.com/damiencarol/polilith
[INFO] tweaked toml for git repo https://github.com/damiencarol/polilith written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/damiencarol/polilith on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/damiencarol/polilith 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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tar v0.4.36
[INFO] [stderr]   Downloaded syn v1.0.57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50ccb358762dedf6e09c7d76cbd599a906b936fc8723925f45b4069e4f6d24b5
[INFO] running `Command { std: "docker" "start" "-a" "50ccb358762dedf6e09c7d76cbd599a906b936fc8723925f45b4069e4f6d24b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50ccb358762dedf6e09c7d76cbd599a906b936fc8723925f45b4069e4f6d24b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50ccb358762dedf6e09c7d76cbd599a906b936fc8723925f45b4069e4f6d24b5", kill_on_drop: false }`
[INFO] [stdout] 50ccb358762dedf6e09c7d76cbd599a906b936fc8723925f45b4069e4f6d24b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3647663ea66a0ed9e605a0f227d5f564ae9bbd87f225ab6598a3f48e0f6ebd7d
[INFO] running `Command { std: "docker" "start" "-a" "3647663ea66a0ed9e605a0f227d5f564ae9bbd87f225ab6598a3f48e0f6ebd7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking tar v0.4.36
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking polilith v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for args in &message.arguments {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for args in &message.arguments {
[INFO] [stdout] 13 +         while let Some(args) = &message.arguments {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for args in &message.arguments {
[INFO] [stdout] 13 +         if let Some(args) = &message.arguments {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for args in &message.arguments {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for args in &message.arguments {
[INFO] [stdout] 13 +         while let Some(args) = &message.arguments {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for args in &message.arguments {
[INFO] [stdout] 13 +         if let Some(args) = &message.arguments {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.86s
[INFO] running `Command { std: "docker" "inspect" "3647663ea66a0ed9e605a0f227d5f564ae9bbd87f225ab6598a3f48e0f6ebd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3647663ea66a0ed9e605a0f227d5f564ae9bbd87f225ab6598a3f48e0f6ebd7d", kill_on_drop: false }`
[INFO] [stdout] 3647663ea66a0ed9e605a0f227d5f564ae9bbd87f225ab6598a3f48e0f6ebd7d