[INFO] cloning repository https://github.com/Congyuwang/rust_concurrent_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Congyuwang/rust_concurrent_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCongyuwang%2Frust_concurrent_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCongyuwang%2Frust_concurrent_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b49b326f5c4cf0a8ecf04236c70a588008f44c6a
[INFO] checking Congyuwang/rust_concurrent_learning against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCongyuwang%2Frust_concurrent_learning" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Congyuwang/rust_concurrent_learning on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Congyuwang/rust_concurrent_learning
[INFO] finished tweaking git repo https://github.com/Congyuwang/rust_concurrent_learning
[INFO] tweaked toml for git repo https://github.com/Congyuwang/rust_concurrent_learning written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Congyuwang/rust_concurrent_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 629e4327eb03b44268b8f09d14c30a23de8c6bd150361469cf549b0da36565ec
[INFO] running `Command { std: "docker" "start" "-a" "629e4327eb03b44268b8f09d14c30a23de8c6bd150361469cf549b0da36565ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "629e4327eb03b44268b8f09d14c30a23de8c6bd150361469cf549b0da36565ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "629e4327eb03b44268b8f09d14c30a23de8c6bd150361469cf549b0da36565ec", kill_on_drop: false }`
[INFO] [stdout] 629e4327eb03b44268b8f09d14c30a23de8c6bd150361469cf549b0da36565ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bd9ad5b471587c0ae2b287f994667505b69ec9550bc2ef1ac51fbd9799af933
[INFO] running `Command { std: "docker" "start" "-a" "7bd9ad5b471587c0ae2b287f994667505b69ec9550bc2ef1ac51fbd9799af933", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rust_concurrent_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `Command { std: "docker" "inspect" "7bd9ad5b471587c0ae2b287f994667505b69ec9550bc2ef1ac51fbd9799af933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bd9ad5b471587c0ae2b287f994667505b69ec9550bc2ef1ac51fbd9799af933", kill_on_drop: false }`
[INFO] [stdout] 7bd9ad5b471587c0ae2b287f994667505b69ec9550bc2ef1ac51fbd9799af933