[INFO] fetching crate polyrec 0.0.1...
[INFO] testing polyrec-0.0.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate polyrec 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate polyrec 0.0.1
[INFO] finished tweaking crates.io crate polyrec 0.0.1
[INFO] tweaked toml for crates.io crate polyrec 0.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate polyrec 0.0.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate polyrec 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.12
[INFO] [stderr]   Downloaded serde v1.0.151
[INFO] [stderr]   Downloaded cargo-husky v1.5.0
[INFO] [stderr]   Downloaded itoa v1.0.5
[INFO] [stderr]   Downloaded ciborium-io v0.2.0
[INFO] [stderr]   Downloaded plotters-backend v0.3.4
[INFO] [stderr]   Downloaded oorandom v11.1.3
[INFO] [stderr]   Downloaded serde_derive v1.0.151
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded plotters-svg v0.3.3
[INFO] [stderr]   Downloaded either v1.8.0
[INFO] [stderr]   Downloaded ciborium-ll v0.2.0
[INFO] [stderr]   Downloaded ciborium v0.2.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.2
[INFO] [stderr]   Downloaded half v1.8.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.13
[INFO] [stderr]   Downloaded rayon-core v1.10.1
[INFO] [stderr]   Downloaded criterion v0.4.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.6
[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded rayon v1.6.1
[INFO] [stderr]   Downloaded serde_json v1.0.91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 827b1dfbc55e848e71ed16a9500ddb2574b39689e6c1d84881a5e08dfe3f119e
[INFO] running `Command { std: "docker" "start" "-a" "827b1dfbc55e848e71ed16a9500ddb2574b39689e6c1d84881a5e08dfe3f119e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "827b1dfbc55e848e71ed16a9500ddb2574b39689e6c1d84881a5e08dfe3f119e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827b1dfbc55e848e71ed16a9500ddb2574b39689e6c1d84881a5e08dfe3f119e", kill_on_drop: false }`
[INFO] [stdout] 827b1dfbc55e848e71ed16a9500ddb2574b39689e6c1d84881a5e08dfe3f119e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dea284c17320d0683937daa315bb9661163c2c340248d86f4c1a413f6db79a1
[INFO] running `Command { std: "docker" "start" "-a" "8dea284c17320d0683937daa315bb9661163c2c340248d86f4c1a413f6db79a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling polyrec v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "8dea284c17320d0683937daa315bb9661163c2c340248d86f4c1a413f6db79a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dea284c17320d0683937daa315bb9661163c2c340248d86f4c1a413f6db79a1", kill_on_drop: false }`
[INFO] [stdout] 8dea284c17320d0683937daa315bb9661163c2c340248d86f4c1a413f6db79a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dfa241fc7eae60f763f4e7974771116af345fcebed9ac47b12c9906a4ee5543
[INFO] running `Command { std: "docker" "start" "-a" "9dfa241fc7eae60f763f4e7974771116af345fcebed9ac47b12c9906a4ee5543", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.151
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling serde v1.0.151
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9dfa241fc7eae60f763f4e7974771116af345fcebed9ac47b12c9906a4ee5543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dfa241fc7eae60f763f4e7974771116af345fcebed9ac47b12c9906a4ee5543", kill_on_drop: false }`
[INFO] [stdout] 9dfa241fc7eae60f763f4e7974771116af345fcebed9ac47b12c9906a4ee5543