[INFO] fetching crate pigeon 0.3.2...
[INFO] checking pigeon-0.3.2 against try#4e3d7541a523df82cea75064e44e60ae9a008bcb for pr-97427
[INFO] extracting crate pigeon 0.3.2 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate pigeon 0.3.2 on toolchain 4e3d7541a523df82cea75064e44e60ae9a008bcb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pigeon 0.3.2
[INFO] finished tweaking crates.io crate pigeon 0.3.2
[INFO] tweaked toml for crates.io crate pigeon 0.3.2 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "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" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ab033b7021489fe1be4c73b8066aa9858c81719075570fd2e1f87045e861f24
[INFO] running `Command { std: "docker" "start" "-a" "9ab033b7021489fe1be4c73b8066aa9858c81719075570fd2e1f87045e861f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ab033b7021489fe1be4c73b8066aa9858c81719075570fd2e1f87045e861f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ab033b7021489fe1be4c73b8066aa9858c81719075570fd2e1f87045e861f24", kill_on_drop: false }`
[INFO] [stdout] 9ab033b7021489fe1be4c73b8066aa9858c81719075570fd2e1f87045e861f24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb2654ce0dd3a113f5f11b1d2e8c6312cb8fc1ad9c803f4cdec75f90694b14f9
[INFO] running `Command { std: "docker" "start" "-a" "eb2654ce0dd3a113f5f11b1d2e8c6312cb8fc1ad9c803f4cdec75f90694b14f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking pigeon v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[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]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.23s
[INFO] running `Command { std: "docker" "inspect" "eb2654ce0dd3a113f5f11b1d2e8c6312cb8fc1ad9c803f4cdec75f90694b14f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb2654ce0dd3a113f5f11b1d2e8c6312cb8fc1ad9c803f4cdec75f90694b14f9", kill_on_drop: false }`
[INFO] [stdout] eb2654ce0dd3a113f5f11b1d2e8c6312cb8fc1ad9c803f4cdec75f90694b14f9