[INFO] cloning repository https://github.com/Jomorx/rust_play
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jomorx/rust_play" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJomorx%2Frust_play", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJomorx%2Frust_play'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d61ce04b7eb208bc0eec254e8679ae34b924103
[INFO] checking Jomorx/rust_play/9d61ce04b7eb208bc0eec254e8679ae34b924103 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJomorx%2Frust_play" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jomorx/rust_play on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jomorx/rust_play
[INFO] finished tweaking git repo https://github.com/Jomorx/rust_play
[INFO] tweaked toml for git repo https://github.com/Jomorx/rust_play written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Jomorx/rust_play 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9e57a79f998d0adbf19d5beeac7f242747a6402f4d2199f7d0c8131b136089d
[INFO] running `Command { std: "docker" "start" "-a" "b9e57a79f998d0adbf19d5beeac7f242747a6402f4d2199f7d0c8131b136089d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9e57a79f998d0adbf19d5beeac7f242747a6402f4d2199f7d0c8131b136089d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e57a79f998d0adbf19d5beeac7f242747a6402f4d2199f7d0c8131b136089d", kill_on_drop: false }`
[INFO] [stdout] b9e57a79f998d0adbf19d5beeac7f242747a6402f4d2199f7d0c8131b136089d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4b9bb12923f4294e6e92ce363517f68ae24091ae7c6fce03cfb188c28ec1f71
[INFO] running `Command { std: "docker" "start" "-a" "b4b9bb12923f4294e6e92ce363517f68ae24091ae7c6fce03cfb188c28ec1f71", kill_on_drop: false }`
[INFO] [stderr]     Checking rr_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lib_list::list::Node`
[INFO] [stdout]  --> src/lib_list/list_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lib_list::list::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/lib_list/mod.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod list_test;
[INFO] [stdout]   | ^^^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "b4b9bb12923f4294e6e92ce363517f68ae24091ae7c6fce03cfb188c28ec1f71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b9bb12923f4294e6e92ce363517f68ae24091ae7c6fce03cfb188c28ec1f71", kill_on_drop: false }`
[INFO] [stdout] b4b9bb12923f4294e6e92ce363517f68ae24091ae7c6fce03cfb188c28ec1f71