[INFO] cloning repository https://github.com/ennioquaglia/sudoku-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ennioquaglia/sudoku-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fennioquaglia%2Fsudoku-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fennioquaglia%2Fsudoku-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0bdd1cc1d2c89f1d68fcf0a77ad92966a4a35b26
[INFO] checking ennioquaglia/sudoku-generator against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fennioquaglia%2Fsudoku-generator" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ennioquaglia/sudoku-generator
[INFO] finished tweaking git repo https://github.com/ennioquaglia/sudoku-generator
[INFO] tweaked toml for git repo https://github.com/ennioquaglia/sudoku-generator written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ennioquaglia/sudoku-generator on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ennioquaglia/sudoku-generator 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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "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
[INFO] checking ennioquaglia/sudoku-generator against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fennioquaglia%2Fsudoku-generator" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ennioquaglia/sudoku-generator
[INFO] finished tweaking git repo https://github.com/ennioquaglia/sudoku-generator
[INFO] tweaked toml for git repo https://github.com/ennioquaglia/sudoku-generator written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ennioquaglia/sudoku-generator on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ennioquaglia/sudoku-generator 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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "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 rand_seeder v0.5.0
[INFO] [stderr]   Downloaded rand_core v0.10.0
[INFO] [stderr]   Downloaded chacha20 v0.10.0
[INFO] [stderr]   Downloaded rand_pcg v0.10.1
[INFO] [stderr]   Downloaded cpufeatures v0.3.0
[INFO] [stderr]   Downloaded rand_chacha v0.10.0
[INFO] [stderr]   Downloaded rand v0.10.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.37
[INFO] [stderr]   Downloaded zerocopy v0.8.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1e9f5fc76d1d6dfb5046dd2c1cde4edb17b21aead638651a8c43c34b34e57f0
[INFO] running `Command { std: "docker" "start" "-a" "f1e9f5fc76d1d6dfb5046dd2c1cde4edb17b21aead638651a8c43c34b34e57f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1e9f5fc76d1d6dfb5046dd2c1cde4edb17b21aead638651a8c43c34b34e57f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1e9f5fc76d1d6dfb5046dd2c1cde4edb17b21aead638651a8c43c34b34e57f0", kill_on_drop: false }`
[INFO] [stdout] f1e9f5fc76d1d6dfb5046dd2c1cde4edb17b21aead638651a8c43c34b34e57f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2413ff61db2a2f41ec0d871dbc9ad235abad12e1ae98b8fc5c0daf62cb8ebca
[INFO] running `Command { std: "docker" "start" "-a" "c2413ff61db2a2f41ec0d871dbc9ad235abad12e1ae98b8fc5c0daf62cb8ebca", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.10.0
[INFO] [stderr]    Compiling zerocopy v0.8.37
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking cpufeatures v0.3.0
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]     Checking rand_seeder v0.5.0
[INFO] [stderr]     Checking rand_pcg v0.10.1
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking rand v0.10.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.10.0
[INFO] [stderr]     Checking sudoku-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.33s
[INFO] running `Command { std: "docker" "inspect" "c2413ff61db2a2f41ec0d871dbc9ad235abad12e1ae98b8fc5c0daf62cb8ebca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2413ff61db2a2f41ec0d871dbc9ad235abad12e1ae98b8fc5c0daf62cb8ebca", kill_on_drop: false }`
[INFO] [stdout] c2413ff61db2a2f41ec0d871dbc9ad235abad12e1ae98b8fc5c0daf62cb8ebca