[INFO] fetching crate neumann 0.1.0...
[INFO] checking neumann-0.1.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate neumann 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate neumann 0.1.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate neumann 0.1.0
[INFO] finished tweaking crates.io crate neumann 0.1.0
[INFO] tweaked toml for crates.io crate neumann 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate neumann 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.45
[INFO] [stderr]   Downloaded minilp v0.2.2
[INFO] [stderr]   Downloaded test-case v1.0.0
[INFO] [stderr]   Downloaded preexplorer v0.3.3
[INFO] [stderr]   Downloaded fasteval v0.2.4
[INFO] [stderr]   Downloaded polynomials v0.2.4
[INFO] [stderr]   Downloaded average v0.10.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df2ec051ecaebd2c4c0e6b384552ab9bb5d57e93cbd101980d52fab8ed368273
[INFO] running `Command { std: "docker" "start" "-a" "df2ec051ecaebd2c4c0e6b384552ab9bb5d57e93cbd101980d52fab8ed368273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df2ec051ecaebd2c4c0e6b384552ab9bb5d57e93cbd101980d52fab8ed368273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df2ec051ecaebd2c4c0e6b384552ab9bb5d57e93cbd101980d52fab8ed368273", kill_on_drop: false }`
[INFO] [stdout] df2ec051ecaebd2c4c0e6b384552ab9bb5d57e93cbd101980d52fab8ed368273
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8ff1272bb7eabd5bc5d8d8856bc12e0719246648a9e045b6a0da16c70a31fd7
[INFO] running `Command { std: "docker" "start" "-a" "b8ff1272bb7eabd5bc5d8d8856bc12e0719246648a9e045b6a0da16c70a31fd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking fasteval v0.2.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling test-case v1.0.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking average v0.10.6
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking sprs v0.7.1
[INFO] [stderr]     Checking minilp v0.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking preexplorer v0.3.3
[INFO] [stderr]     Checking polynomials v0.2.4
[INFO] [stderr]     Checking neumann v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.28s
[INFO] running `Command { std: "docker" "inspect" "b8ff1272bb7eabd5bc5d8d8856bc12e0719246648a9e045b6a0da16c70a31fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ff1272bb7eabd5bc5d8d8856bc12e0719246648a9e045b6a0da16c70a31fd7", kill_on_drop: false }`
[INFO] [stdout] b8ff1272bb7eabd5bc5d8d8856bc12e0719246648a9e045b6a0da16c70a31fd7