[INFO] fetching crate neumann 0.1.0...
[INFO] checking neumann-0.1.0 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate neumann 0.1.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate neumann 0.1.0 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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-15/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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-rational v0.3.0
[INFO] [stderr]   Downloaded num-bigint v0.3.0
[INFO] [stderr]   Downloaded getset v0.1.1
[INFO] [stderr]   Downloaded float-ord v0.2.0
[INFO] [stderr]   Downloaded matrixmultiply v0.2.3
[INFO] [stderr]   Downloaded ndarray v0.13.1
[INFO] [stderr]   Downloaded sprs v0.7.1
[INFO] [stderr]   Downloaded minilp v0.2.2
[INFO] [stderr]   Downloaded fasteval v0.2.4
[INFO] [stderr]   Downloaded preexplorer v0.3.3
[INFO] [stderr]   Downloaded average v0.10.6
[INFO] [stderr]   Downloaded polynomials v0.2.4
[INFO] [stderr]   Downloaded libc v0.2.79
[INFO] [stderr]   Downloaded syn v1.0.45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcaeb905e550bb498cdd68ad05c38a0194186852ed9070d1dfa420193c7fe8cb
[INFO] running `Command { std: "docker" "start" "-a" "fcaeb905e550bb498cdd68ad05c38a0194186852ed9070d1dfa420193c7fe8cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcaeb905e550bb498cdd68ad05c38a0194186852ed9070d1dfa420193c7fe8cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcaeb905e550bb498cdd68ad05c38a0194186852ed9070d1dfa420193c7fe8cb", kill_on_drop: false }`
[INFO] [stdout] fcaeb905e550bb498cdd68ad05c38a0194186852ed9070d1dfa420193c7fe8cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2001b65b5a70cbc1807904e7639a6743109d8e35084a9a9d1e9f54b70bb3c2bd
[INFO] running `Command { std: "docker" "start" "-a" "2001b65b5a70cbc1807904e7639a6743109d8e35084a9a9d1e9f54b70bb3c2bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling serde_derive v1.0.117
[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 either v1.6.1
[INFO] [stderr]     Checking fasteval v0.2.4
[INFO] [stderr]    Compiling test-case v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking itertools v0.9.0
[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 proc-macro-error-attr v1.0.4
[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]    Compiling proc-macro-error v1.0.4
[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 30.35s
[INFO] running `Command { std: "docker" "inspect" "2001b65b5a70cbc1807904e7639a6743109d8e35084a9a9d1e9f54b70bb3c2bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2001b65b5a70cbc1807904e7639a6743109d8e35084a9a9d1e9f54b70bb3c2bd", kill_on_drop: false }`
[INFO] [stdout] 2001b65b5a70cbc1807904e7639a6743109d8e35084a9a9d1e9f54b70bb3c2bd