[INFO] cloning repository https://github.com/galenb-msft/minimal_repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/galenb-msft/minimal_repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgalenb-msft%2Fminimal_repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgalenb-msft%2Fminimal_repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8be8e6bf232bd9d607521225784c3578132a6378
[INFO] testing galenb-msft/minimal_repro against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgalenb-msft%2Fminimal_repro" "/workspace/builds/worker-61/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-61/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/galenb-msft/minimal_repro on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/galenb-msft/minimal_repro
[INFO] finished tweaking git repo https://github.com/galenb-msft/minimal_repro
[INFO] tweaked toml for git repo https://github.com/galenb-msft/minimal_repro written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] crate git repo https://github.com/galenb-msft/minimal_repro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows_macros v0.11.0
[INFO] [stderr]   Downloaded windows v0.11.0
[INFO] [stderr]   Downloaded windows_gen v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12da30f8d58ad46cf350774f45c57834600436854513fb0d2fe14fbb2ba60ffe
[INFO] running `Command { std: "docker" "start" "-a" "12da30f8d58ad46cf350774f45c57834600436854513fb0d2fe14fbb2ba60ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12da30f8d58ad46cf350774f45c57834600436854513fb0d2fe14fbb2ba60ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12da30f8d58ad46cf350774f45c57834600436854513fb0d2fe14fbb2ba60ffe", kill_on_drop: false }`
[INFO] [stdout] 12da30f8d58ad46cf350774f45c57834600436854513fb0d2fe14fbb2ba60ffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc7b34ab6043b81d20ecbcb0b3889479e351a3fc42b19593c59128f48481f69a
[INFO] running `Command { std: "docker" "start" "-a" "cc7b34ab6043b81d20ecbcb0b3889479e351a3fc42b19593c59128f48481f69a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling windows_gen v0.11.0
[INFO] [stderr]    Compiling const-sha1 v0.2.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.73/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no -C debuginfo=2 -C debug-assertions=on --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=f75815c77453d536 -C extra-filename=-f75815c77453d536 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-44c2c79c33a0116e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a161d26b243e7dc4.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-c9f4f4a81d21f94f.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "cc7b34ab6043b81d20ecbcb0b3889479e351a3fc42b19593c59128f48481f69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7b34ab6043b81d20ecbcb0b3889479e351a3fc42b19593c59128f48481f69a", kill_on_drop: false }`
[INFO] [stdout] cc7b34ab6043b81d20ecbcb0b3889479e351a3fc42b19593c59128f48481f69a