[INFO] fetching crate m6coll 0.2.0...
[INFO] checking m6coll-0.2.0 against master#cced03bfd61a304243a34504618ecec86c17063f for pr-157082
[INFO] extracting crate m6coll 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate m6coll 0.2.0
[INFO] finished tweaking crates.io crate m6coll 0.2.0
[INFO] tweaked toml for crates.io crate m6coll 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate m6coll 0.2.0 on toolchain cced03bfd61a304243a34504618ecec86c17063f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "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 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded m6entry v0.1.0
[INFO] [stderr]   Downloaded m6bitmap v0.1.0
[INFO] [stderr]   Downloaded m6arr v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3
[INFO] running `Command { std: "docker" "start" "b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking m6arr v0.2.0
[INFO] [stderr]     Checking m6entry v0.1.0
[INFO] [stderr]     Checking m6bitmap v0.1.0
[INFO] [stderr]     Checking m6coll v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3", kill_on_drop: false }`
[INFO] [stdout] b074b4cf484e29d2a29a1253be12dbd711966147edda52c5e8899546fa0e4ce3