[INFO] fetching crate varcon 0.5.0...
[INFO] checking varcon-0.5.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate varcon 0.5.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate varcon 0.5.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varcon 0.5.0
[INFO] finished tweaking crates.io crate varcon 0.5.0
[INFO] tweaked toml for crates.io crate varcon 0.5.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b998fe42f8c25d3e67edd73fb7ca08d3094eda3646df082ec6daa7ddea432b90
[INFO] running `Command { std: "docker" "start" "-a" "b998fe42f8c25d3e67edd73fb7ca08d3094eda3646df082ec6daa7ddea432b90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b998fe42f8c25d3e67edd73fb7ca08d3094eda3646df082ec6daa7ddea432b90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b998fe42f8c25d3e67edd73fb7ca08d3094eda3646df082ec6daa7ddea432b90", kill_on_drop: false }`
[INFO] [stdout] b998fe42f8c25d3e67edd73fb7ca08d3094eda3646df082ec6daa7ddea432b90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a235b077e6e16555ae64aa3ef154e0e8e742865b611b0c08e959ee53ddd7ef7
[INFO] running `Command { std: "docker" "start" "-a" "4a235b077e6e16555ae64aa3ef154e0e8e742865b611b0c08e959ee53ddd7ef7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling enumflags2_derive v0.7.0
[INFO] [stderr]     Checking enumflags2 v0.7.1
[INFO] [stderr]     Checking varcon-core v2.1.0
[INFO] [stderr]     Checking varcon v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `varcon`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name varcon --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="all"' --cfg 'feature="default"' --cfg 'feature="flags"' -C metadata=e7f37aa9a0317e9e -C extra-filename=-e7f37aa9a0317e9e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern varcon_core=/opt/rustwide/target/debug/deps/libvarcon_core-37d48afcfa61ce27.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4a235b077e6e16555ae64aa3ef154e0e8e742865b611b0c08e959ee53ddd7ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a235b077e6e16555ae64aa3ef154e0e8e742865b611b0c08e959ee53ddd7ef7", kill_on_drop: false }`
[INFO] [stdout] 4a235b077e6e16555ae64aa3ef154e0e8e742865b611b0c08e959ee53ddd7ef7