[INFO] fetching crate exons 0.1.5...
[INFO] checking exons-0.1.5 against master#42bd138126b0a9d38d65bc9973e72de3c5b6c37f for pr-99217
[INFO] extracting crate exons 0.1.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate exons 0.1.5 on toolchain 42bd138126b0a9d38d65bc9973e72de3c5b6c37f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42bd138126b0a9d38d65bc9973e72de3c5b6c37f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exons 0.1.5
[INFO] finished tweaking crates.io crate exons 0.1.5
[INFO] tweaked toml for crates.io crate exons 0.1.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42bd138126b0a9d38d65bc9973e72de3c5b6c37f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42bd138126b0a9d38d65bc9973e72de3c5b6c37f" "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 vector_utils v0.1.5
[INFO] [stderr]   Downloaded io_utils v0.3.2
[INFO] [stderr]   Downloaded lz4 v1.23.3
[INFO] [stderr]   Downloaded lz4-sys v1.9.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+42bd138126b0a9d38d65bc9973e72de3c5b6c37f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef8a3b6aa8999598a44e44f717c982935ee512f656e6d18641f42da010498da8
[INFO] running `Command { std: "docker" "start" "-a" "ef8a3b6aa8999598a44e44f717c982935ee512f656e6d18641f42da010498da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef8a3b6aa8999598a44e44f717c982935ee512f656e6d18641f42da010498da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef8a3b6aa8999598a44e44f717c982935ee512f656e6d18641f42da010498da8", kill_on_drop: false }`
[INFO] [stdout] ef8a3b6aa8999598a44e44f717c982935ee512f656e6d18641f42da010498da8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+42bd138126b0a9d38d65bc9973e72de3c5b6c37f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e54c5d41700df47d382091070e949bec6c8b57f4f5c18bac309ca6d93b2eba8
[INFO] running `Command { std: "docker" "start" "-a" "1e54c5d41700df47d382091070e949bec6c8b57f4f5c18bac309ca6d93b2eba8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking permutation v0.2.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking vector_utils v0.1.5
[INFO] [stderr]     Checking string_utils v0.1.4
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling lz4-sys v1.9.3
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking lz4 v1.23.3
[INFO] [stderr]     Checking io_utils v0.3.2
[INFO] [stderr]     Checking exons v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.23s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "1e54c5d41700df47d382091070e949bec6c8b57f4f5c18bac309ca6d93b2eba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e54c5d41700df47d382091070e949bec6c8b57f4f5c18bac309ca6d93b2eba8", kill_on_drop: false }`
[INFO] [stdout] 1e54c5d41700df47d382091070e949bec6c8b57f4f5c18bac309ca6d93b2eba8