[INFO] fetching crate byteio 0.2.3...
[INFO] checking byteio-0.2.3 against try#dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e for pr-153721
[INFO] extracting crate byteio 0.2.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate byteio 0.2.3
[INFO] finished tweaking crates.io crate byteio 0.2.3
[INFO] tweaked toml for crates.io crate byteio 0.2.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate byteio 0.2.3 on toolchain dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "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" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.8.2 (available: v0.15.0)
[INFO] [stderr]       Adding quickcheck v0.8.5 (available: v1.1.0)
[INFO] [stderr]       Adding quickcheck_macros v0.8.0 (available: v1.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "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-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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] 6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4
[INFO] running `Command { std: "docker" "start" "6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4", 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" "6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4", 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" "6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking either v1.16.0
[INFO] [stderr]     Checking byteio v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.26s
[INFO] running `Command { std: "docker" "inspect" "6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4", kill_on_drop: false }`
[INFO] [stdout] 6b52a20e7a1e22df468bafb8869b79fba4662278e199ce33b4a7d3c6451fedf4
