[INFO] fetching crate prost 0.9.0...
[INFO] testing prost-0.9.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate prost 0.9.0 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate prost 0.9.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prost 0.9.0
[INFO] finished tweaking crates.io crate prost 0.9.0
[INFO] tweaked toml for crates.io crate prost 0.9.0 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46f0adc3adc9d380bc965dba94e22c19f209a93bdc04a90d21f00fcc7021ba64
[INFO] running `Command { std: "docker" "start" "-a" "46f0adc3adc9d380bc965dba94e22c19f209a93bdc04a90d21f00fcc7021ba64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46f0adc3adc9d380bc965dba94e22c19f209a93bdc04a90d21f00fcc7021ba64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f0adc3adc9d380bc965dba94e22c19f209a93bdc04a90d21f00fcc7021ba64", kill_on_drop: false }`
[INFO] [stdout] 46f0adc3adc9d380bc965dba94e22c19f209a93bdc04a90d21f00fcc7021ba64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e44cf089768e95f0fdd7841e85577b311487938e7c8055507e558b27c34d153
[INFO] running `Command { std: "docker" "start" "-a" "3e44cf089768e95f0fdd7841e85577b311487938e7c8055507e558b27c34d153", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling prost-derive v0.9.0
[INFO] [stderr]    Compiling prost v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.39s
[INFO] running `Command { std: "docker" "inspect" "3e44cf089768e95f0fdd7841e85577b311487938e7c8055507e558b27c34d153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e44cf089768e95f0fdd7841e85577b311487938e7c8055507e558b27c34d153", kill_on_drop: false }`
[INFO] [stdout] 3e44cf089768e95f0fdd7841e85577b311487938e7c8055507e558b27c34d153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a481a22c56fd43dd9eea86e9c3b5f1413d497870eda853c598f0bbef27b70c7
[INFO] running `Command { std: "docker" "start" "-a" "4a481a22c56fd43dd9eea86e9c3b5f1413d497870eda853c598f0bbef27b70c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.6
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling proptest v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling prost v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `prost`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name prost --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="prost-derive"' --cfg 'feature="std"' -C metadata=1821aa40a43eb275 -C extra-filename=-1821aa40a43eb275 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-aef2fed8d18e2e93.rlib --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-550af40b30aaef75.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-d78c3efdc4e1a61a.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-29a347dd5dbcecec.rlib --extern proptest=/opt/rustwide/target/debug/deps/libproptest-b362aa14ae4c3b64.rlib --extern prost_derive=/opt/rustwide/target/debug/deps/libprost_derive-6e5c27179b751fa5.so --extern rand=/opt/rustwide/target/debug/deps/librand-561194eab0f95ba0.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "4a481a22c56fd43dd9eea86e9c3b5f1413d497870eda853c598f0bbef27b70c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a481a22c56fd43dd9eea86e9c3b5f1413d497870eda853c598f0bbef27b70c7", kill_on_drop: false }`
[INFO] [stdout] 4a481a22c56fd43dd9eea86e9c3b5f1413d497870eda853c598f0bbef27b70c7