[INFO] cloning repository https://github.com/ghislaine-laios-toy/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ghislaine-laios-toy/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghislaine-laios-toy%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghislaine-laios-toy%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d2ec94ad0d0e945a73618ae4e37e7d158dba263
[INFO] checking ghislaine-laios-toy/rust-playground against try#dd2d87b6cc31907ae305875eb6be399783dc0256 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghislaine-laios-toy%2Frust-playground" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ghislaine-laios-toy/rust-playground
[INFO] finished tweaking git repo https://github.com/ghislaine-laios-toy/rust-playground
[INFO] tweaked toml for git repo https://github.com/ghislaine-laios-toy/rust-playground written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ghislaine-laios-toy/rust-playground on toolchain dd2d87b6cc31907ae305875eb6be399783dc0256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ghislaine-laios-toy/rust-playground 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" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking ghislaine-laios-toy/rust-playground against try#dd2d87b6cc31907ae305875eb6be399783dc0256 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghislaine-laios-toy%2Frust-playground" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ghislaine-laios-toy/rust-playground
[INFO] finished tweaking git repo https://github.com/ghislaine-laios-toy/rust-playground
[INFO] tweaked toml for git repo https://github.com/ghislaine-laios-toy/rust-playground written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ghislaine-laios-toy/rust-playground on toolchain dd2d87b6cc31907ae305875eb6be399783dc0256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ghislaine-laios-toy/rust-playground 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" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3bdc50f8baadb5e5c3a3245db705504a976065f3d93dacfc84af6a2516ca1a7
[INFO] running `Command { std: "docker" "start" "-a" "c3bdc50f8baadb5e5c3a3245db705504a976065f3d93dacfc84af6a2516ca1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3bdc50f8baadb5e5c3a3245db705504a976065f3d93dacfc84af6a2516ca1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3bdc50f8baadb5e5c3a3245db705504a976065f3d93dacfc84af6a2516ca1a7", kill_on_drop: false }`
[INFO] [stdout] c3bdc50f8baadb5e5c3a3245db705504a976065f3d93dacfc84af6a2516ca1a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+dd2d87b6cc31907ae305875eb6be399783dc0256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4215657962733b91c164d1919e96ffb4b8456e9d32dbfe4e68f0d5e632cfdb5
[INFO] running `Command { std: "docker" "start" "-a" "f4215657962733b91c164d1919e96ffb4b8456e9d32dbfe4e68f0d5e632cfdb5", kill_on_drop: false }`
[INFO] [stderr]     Checking split-test v0.1.0 (/opt/rustwide/workdir/workspaces/split-test)
[INFO] [stderr]     Checking as-ref-arguments v0.1.0 (/opt/rustwide/workdir/workspaces/as-ref-arguments)
[INFO] [stderr]     Checking rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> workspaces/as-ref-arguments/src/lib.rs:53:23
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let n = m as &(dyn DemoTrait);
[INFO] [stdout]    |                       ^             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 53 -         let n = m as &(dyn DemoTrait);
[INFO] [stdout] 53 +         let n = m as &dyn DemoTrait;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "f4215657962733b91c164d1919e96ffb4b8456e9d32dbfe4e68f0d5e632cfdb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4215657962733b91c164d1919e96ffb4b8456e9d32dbfe4e68f0d5e632cfdb5", kill_on_drop: false }`
[INFO] [stdout] f4215657962733b91c164d1919e96ffb4b8456e9d32dbfe4e68f0d5e632cfdb5