[INFO] fetching crate stakker_mio 0.2.5...
[INFO] checking stakker_mio-0.2.5 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate stakker_mio 0.2.5 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate stakker_mio 0.2.5
[INFO] finished tweaking crates.io crate stakker_mio 0.2.5
[INFO] tweaked toml for crates.io crate stakker_mio 0.2.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stakker_mio 0.2.5 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stakker_mio 0.2.5 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6541ae0823c1c9c4509a740f88b45adce32c0bf2f52865164241054e2931c1db
[INFO] running `Command { std: "docker" "start" "-a" "6541ae0823c1c9c4509a740f88b45adce32c0bf2f52865164241054e2931c1db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6541ae0823c1c9c4509a740f88b45adce32c0bf2f52865164241054e2931c1db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6541ae0823c1c9c4509a740f88b45adce32c0bf2f52865164241054e2931c1db", kill_on_drop: false }`
[INFO] [stdout] 6541ae0823c1c9c4509a740f88b45adce32c0bf2f52865164241054e2931c1db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 339412ca9be00f69c7a60c3f0ff8a39bdfa4fd0bd4ebd54871c339f416f63b9a
[INFO] running `Command { std: "docker" "start" "-a" "339412ca9be00f69c7a60c3f0ff8a39bdfa4fd0bd4ebd54871c339f416f63b9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking qcell v0.5.3
[INFO] [stderr]     Checking stakker v0.2.5
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking stakker_mio v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "339412ca9be00f69c7a60c3f0ff8a39bdfa4fd0bd4ebd54871c339f416f63b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "339412ca9be00f69c7a60c3f0ff8a39bdfa4fd0bd4ebd54871c339f416f63b9a", kill_on_drop: false }`
[INFO] [stdout] 339412ca9be00f69c7a60c3f0ff8a39bdfa4fd0bd4ebd54871c339f416f63b9a