[INFO] cloning repository https://github.com/mattiapenati/how_to
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattiapenati/how_to" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattiapenati%2Fhow_to", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattiapenati%2Fhow_to'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96cbd1d88e1e8855a6913dcd69df51efc2f92b4c
[INFO] checking mattiapenati/how_to against try#4c525d43052e921548191f82f6ed9e2f9e98dcb1 for pr-136988
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattiapenati%2Fhow_to" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattiapenati/how_to on toolchain 4c525d43052e921548191f82f6ed9e2f9e98dcb1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4c525d43052e921548191f82f6ed9e2f9e98dcb1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mattiapenati/how_to
[INFO] finished tweaking git repo https://github.com/mattiapenati/how_to
[INFO] tweaked toml for git repo https://github.com/mattiapenati/how_to written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mattiapenati/how_to 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" "+4c525d43052e921548191f82f6ed9e2f9e98dcb1" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+4c525d43052e921548191f82f6ed9e2f9e98dcb1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb903de2391334879b9b2175d26602bf1886f06d58fd1e425f46e88d651b3128
[INFO] running `Command { std: "docker" "start" "-a" "fb903de2391334879b9b2175d26602bf1886f06d58fd1e425f46e88d651b3128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb903de2391334879b9b2175d26602bf1886f06d58fd1e425f46e88d651b3128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb903de2391334879b9b2175d26602bf1886f06d58fd1e425f46e88d651b3128", kill_on_drop: false }`
[INFO] [stdout] fb903de2391334879b9b2175d26602bf1886f06d58fd1e425f46e88d651b3128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+4c525d43052e921548191f82f6ed9e2f9e98dcb1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28db610627b5ab4fc4ac8de9c62bb79c1ab99fc2e74c62b1af616a1bf0e12836
[INFO] running `Command { std: "docker" "start" "-a" "28db610627b5ab4fc4ac8de9c62bb79c1ab99fc2e74c62b1af616a1bf0e12836", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking tracing-subscriber v0.3.9
[INFO] [stderr]     Checking cached_result v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `Command { std: "docker" "inspect" "28db610627b5ab4fc4ac8de9c62bb79c1ab99fc2e74c62b1af616a1bf0e12836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28db610627b5ab4fc4ac8de9c62bb79c1ab99fc2e74c62b1af616a1bf0e12836", kill_on_drop: false }`
[INFO] [stdout] 28db610627b5ab4fc4ac8de9c62bb79c1ab99fc2e74c62b1af616a1bf0e12836