[INFO] cloning repository https://github.com/kevin-m-kent/hot-complexity
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kevin-m-kent/hot-complexity" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin-m-kent%2Fhot-complexity", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin-m-kent%2Fhot-complexity'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6094bb7e473c290d1909d8b321f1713e6267105d
[INFO] checking kevin-m-kent/hot-complexity against master#9ba3d315b4b2bea7485071eaf4b2681320cd2a27 for pr-124592
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin-m-kent%2Fhot-complexity" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevin-m-kent/hot-complexity on toolchain 9ba3d315b4b2bea7485071eaf4b2681320cd2a27
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9ba3d315b4b2bea7485071eaf4b2681320cd2a27" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kevin-m-kent/hot-complexity
[INFO] finished tweaking git repo https://github.com/kevin-m-kent/hot-complexity
[INFO] tweaked toml for git repo https://github.com/kevin-m-kent/hot-complexity written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kevin-m-kent/hot-complexity 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" "+9ba3d315b4b2bea7485071eaf4b2681320cd2a27" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking kevin-m-kent/hot-complexity against try#2466b92ed5feb282a98bb984f45d1e6d39f8c1aa for pr-124592
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin-m-kent%2Fhot-complexity" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevin-m-kent/hot-complexity on toolchain 2466b92ed5feb282a98bb984f45d1e6d39f8c1aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2466b92ed5feb282a98bb984f45d1e6d39f8c1aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kevin-m-kent/hot-complexity
[INFO] finished tweaking git repo https://github.com/kevin-m-kent/hot-complexity
[INFO] tweaked toml for git repo https://github.com/kevin-m-kent/hot-complexity written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kevin-m-kent/hot-complexity 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" "+2466b92ed5feb282a98bb984f45d1e6d39f8c1aa" "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 polars v0.25.1
[INFO] [stderr]   Downloaded polars-utils v0.25.1
[INFO] [stderr]   Downloaded nshare v0.9.0
[INFO] [stderr]   Downloaded polars-ops v0.25.1
[INFO] [stderr]   Downloaded polars-pipe v0.25.1
[INFO] [stderr]   Downloaded polars-arrow v0.25.1
[INFO] [stderr]   Downloaded slice-of-array v0.3.2
[INFO] [stderr]   Downloaded polars-time v0.25.1
[INFO] [stderr]   Downloaded opencv-binding-generator v0.52.0
[INFO] [stderr]   Downloaded polars-lazy v0.25.1
[INFO] [stderr]   Downloaded polars-plan v0.25.1
[INFO] [stderr]   Downloaded polars-core v0.25.1
[INFO] [stderr]   Downloaded polars-io v0.25.1
[INFO] [stderr]   Downloaded arrow2 v0.14.2
[INFO] [stderr]   Downloaded comfy-table v6.1.3
[INFO] [stderr]   Downloaded cv-convert v0.21.2
[INFO] [stderr]   Downloaded opencv v0.74.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+2466b92ed5feb282a98bb984f45d1e6d39f8c1aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d23ea08ec59f345ad204a1830ded0e81d18dddeaaa80885c1ad1ea7544c62e56
[INFO] running `Command { std: "docker" "start" "-a" "d23ea08ec59f345ad204a1830ded0e81d18dddeaaa80885c1ad1ea7544c62e56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d23ea08ec59f345ad204a1830ded0e81d18dddeaaa80885c1ad1ea7544c62e56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d23ea08ec59f345ad204a1830ded0e81d18dddeaaa80885c1ad1ea7544c62e56", kill_on_drop: false }`
[INFO] [stdout] d23ea08ec59f345ad204a1830ded0e81d18dddeaaa80885c1ad1ea7544c62e56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+2466b92ed5feb282a98bb984f45d1e6d39f8c1aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69b4981d0fd1b89a668fb2f073a2358562969b1e80ea81f38b44c40954b7c14a
[INFO] running `Command { std: "docker" "start" "-a" "69b4981d0fd1b89a668fb2f073a2358562969b1e80ea81f38b44c40954b7c14a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking lexical-write-integer v0.8.5
[INFO] [stderr]     Checking lexical-parse-integer v0.8.6
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]    Compiling ahash v0.8.2
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking hash_hasher v2.0.3
[INFO] [stderr]     Checking dyn-clone v1.0.9
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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]     Checking foreign_vec v0.1.0
[INFO] [stderr]     Checking ethnum v1.3.2
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking lexical-write-float v0.8.5
[INFO] [stderr]     Checking lexical-parse-float v0.8.5
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "69b4981d0fd1b89a668fb2f073a2358562969b1e80ea81f38b44c40954b7c14a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b4981d0fd1b89a668fb2f073a2358562969b1e80ea81f38b44c40954b7c14a", kill_on_drop: false }`
[INFO] [stdout] 69b4981d0fd1b89a668fb2f073a2358562969b1e80ea81f38b44c40954b7c14a