[INFO] fetching crate rust-mnist 0.1.4...
[INFO] testing rust-mnist-0.1.4 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate rust-mnist 0.1.4 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate rust-mnist 0.1.4 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-mnist 0.1.4
[INFO] finished tweaking crates.io crate rust-mnist 0.1.4
[INFO] tweaked toml for crates.io crate rust-mnist 0.1.4 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate rust-mnist 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32e1ce93c7478b4a634a338eb03d277fb83c69d390554271990a6e37a3272913
[INFO] running `Command { std: "docker" "start" "-a" "32e1ce93c7478b4a634a338eb03d277fb83c69d390554271990a6e37a3272913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32e1ce93c7478b4a634a338eb03d277fb83c69d390554271990a6e37a3272913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32e1ce93c7478b4a634a338eb03d277fb83c69d390554271990a6e37a3272913", kill_on_drop: false }`
[INFO] [stdout] 32e1ce93c7478b4a634a338eb03d277fb83c69d390554271990a6e37a3272913
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e1c14551d4b5c879b15bcc2c154ab4a8af6b5d5254c8b328ea2144ffa0aa233
[INFO] running `Command { std: "docker" "start" "-a" "1e1c14551d4b5c879b15bcc2c154ab4a8af6b5d5254c8b328ea2144ffa0aa233", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rust-mnist v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "1e1c14551d4b5c879b15bcc2c154ab4a8af6b5d5254c8b328ea2144ffa0aa233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e1c14551d4b5c879b15bcc2c154ab4a8af6b5d5254c8b328ea2144ffa0aa233", kill_on_drop: false }`
[INFO] [stdout] 1e1c14551d4b5c879b15bcc2c154ab4a8af6b5d5254c8b328ea2144ffa0aa233
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 934ac06a64b20bdd6a18e70ea0ad32b0e09cf430f923235d5e0fe4f396713c0a
[INFO] running `Command { std: "docker" "start" "-a" "934ac06a64b20bdd6a18e70ea0ad32b0e09cf430f923235d5e0fe4f396713c0a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling tinytemplate v1.0.3
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling rand_os v0.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling criterion-plot v0.4.0
[INFO] [stderr]    Compiling bstr v0.2.9
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling criterion v0.3.0
[INFO] [stderr]    Compiling rust-mnist v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.58s
[INFO] running `Command { std: "docker" "inspect" "934ac06a64b20bdd6a18e70ea0ad32b0e09cf430f923235d5e0fe4f396713c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "934ac06a64b20bdd6a18e70ea0ad32b0e09cf430f923235d5e0fe4f396713c0a", kill_on_drop: false }`
[INFO] [stdout] 934ac06a64b20bdd6a18e70ea0ad32b0e09cf430f923235d5e0fe4f396713c0a
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aa5445e7808d8693bf146b44bb596a4c887c33880dd9a643fe9fc01d69e7e736
[INFO] running `Command { std: "docker" "start" "-a" "aa5445e7808d8693bf146b44bb596a4c887c33880dd9a643fe9fc01d69e7e736", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_mnist-f1febcd6bb405a1c)
[INFO] [stderr]    Doc-tests rust-mnist
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aa5445e7808d8693bf146b44bb596a4c887c33880dd9a643fe9fc01d69e7e736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa5445e7808d8693bf146b44bb596a4c887c33880dd9a643fe9fc01d69e7e736", kill_on_drop: false }`
[INFO] [stdout] aa5445e7808d8693bf146b44bb596a4c887c33880dd9a643fe9fc01d69e7e736