[INFO] fetching crate stak-minifier 0.1.30...
[INFO] checking stak-minifier-0.1.30 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate stak-minifier 0.1.30 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate stak-minifier 0.1.30 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stak-minifier 0.1.30
[INFO] finished tweaking crates.io crate stak-minifier 0.1.30
[INFO] tweaked toml for crates.io crate stak-minifier 0.1.30 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding yansi v0.5.1 (latest: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "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 stak-code v0.2.51
[INFO] [stderr]   Downloaded stak-file v0.4.10
[INFO] [stderr]   Downloaded stak-macro v0.1.53
[INFO] [stderr]   Downloaded stak-device v0.2.52
[INFO] [stderr]   Downloaded stak-configuration v0.1.48
[INFO] [stderr]   Downloaded stak-macro-util v0.1.29
[INFO] [stderr]   Downloaded stak-compiler v0.1.56
[INFO] [stderr]   Downloaded stak-primitive v0.5.10
[INFO] [stderr]   Downloaded stak-process-context v0.2.10
[INFO] [stderr]   Downloaded stak-vm v0.5.10
[INFO] [stderr]   Downloaded cfg-exif v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f6189aba34457e6f7c85b1fce84e1e354db2979cb10d7014a3e5c235a394823
[INFO] running `Command { std: "docker" "start" "-a" "4f6189aba34457e6f7c85b1fce84e1e354db2979cb10d7014a3e5c235a394823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f6189aba34457e6f7c85b1fce84e1e354db2979cb10d7014a3e5c235a394823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f6189aba34457e6f7c85b1fce84e1e354db2979cb10d7014a3e5c235a394823", kill_on_drop: false }`
[INFO] [stdout] 4f6189aba34457e6f7c85b1fce84e1e354db2979cb10d7014a3e5c235a394823
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9ba4882222b18a8be607405840ab5a8ddaff5aa8db8849ec908b06cc8b4026f
[INFO] running `Command { std: "docker" "start" "-a" "e9ba4882222b18a8be607405840ab5a8ddaff5aa8db8849ec908b06cc8b4026f", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling cfg-exif v0.3.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling stak-code v0.2.51
[INFO] [stderr]    Compiling stak-device v0.2.52
[INFO] [stderr]    Compiling stak-process-context v0.2.10
[INFO] [stderr]    Compiling stak-vm v0.5.10
[INFO] [stderr]    Compiling stak-compiler v0.1.56
[INFO] [stderr]    Compiling stak-file v0.4.10
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling stak-configuration v0.1.48
[INFO] [stderr]    Compiling stak-macro-util v0.1.29
[INFO] [stderr]     Checking pretty_assertions v1.4.0
[INFO] [stderr]     Checking stak-primitive v0.5.10
[INFO] [stderr]    Compiling stak-macro v0.1.53
[INFO] [stderr]     Checking stak-minifier v0.1.30 (/opt/rustwide/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "e9ba4882222b18a8be607405840ab5a8ddaff5aa8db8849ec908b06cc8b4026f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ba4882222b18a8be607405840ab5a8ddaff5aa8db8849ec908b06cc8b4026f", kill_on_drop: false }`
[INFO] [stdout] e9ba4882222b18a8be607405840ab5a8ddaff5aa8db8849ec908b06cc8b4026f