[INFO] fetching crate proptest 1.0.0...
[INFO] building proptest-1.0.0 against master#87788097b776f8e3662f76627944230684b671bd for pr-101591
[INFO] extracting crate proptest 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate proptest 1.0.0 on toolchain 87788097b776f8e3662f76627944230684b671bd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate proptest 1.0.0
[INFO] finished tweaking crates.io crate proptest 1.0.0
[INFO] tweaked toml for crates.io crate proptest 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate proptest 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded raw-cpuid v8.0.0
[INFO] [stderr]   Downloaded x86 v0.33.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a78be7d93a09386ae3bb55302e3730c9ad5bdaa34c774e505cc98b9f39f26832
[INFO] running `Command { std: "docker" "start" "-a" "a78be7d93a09386ae3bb55302e3730c9ad5bdaa34c774e505cc98b9f39f26832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a78be7d93a09386ae3bb55302e3730c9ad5bdaa34c774e505cc98b9f39f26832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a78be7d93a09386ae3bb55302e3730c9ad5bdaa34c774e505cc98b9f39f26832", kill_on_drop: false }`
[INFO] [stdout] a78be7d93a09386ae3bb55302e3730c9ad5bdaa34c774e505cc98b9f39f26832
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 668bab01e2250ec818b75f2cb99897c3409dae4d0393f3fcb3237d00d02ae237
[INFO] running `Command { std: "docker" "start" "-a" "668bab01e2250ec818b75f2cb99897c3409dae4d0393f3fcb3237d00d02ae237", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling quick-error v2.0.0
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling proptest v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.76s
[INFO] running `Command { std: "docker" "inspect" "668bab01e2250ec818b75f2cb99897c3409dae4d0393f3fcb3237d00d02ae237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "668bab01e2250ec818b75f2cb99897c3409dae4d0393f3fcb3237d00d02ae237", kill_on_drop: false }`
[INFO] [stdout] 668bab01e2250ec818b75f2cb99897c3409dae4d0393f3fcb3237d00d02ae237
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+87788097b776f8e3662f76627944230684b671bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d94e80f5ec021d4741c157839a7c42558f8bc0b3dcae8b08684d107e98aeecd
[INFO] running `Command { std: "docker" "start" "-a" "8d94e80f5ec021d4741c157839a7c42558f8bc0b3dcae8b08684d107e98aeecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling proptest v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 39.31s
[INFO] running `Command { std: "docker" "inspect" "8d94e80f5ec021d4741c157839a7c42558f8bc0b3dcae8b08684d107e98aeecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d94e80f5ec021d4741c157839a7c42558f8bc0b3dcae8b08684d107e98aeecd", kill_on_drop: false }`
[INFO] [stdout] 8d94e80f5ec021d4741c157839a7c42558f8bc0b3dcae8b08684d107e98aeecd