[INFO] cloning repository https://github.com/TENX-S/collatz_conjecture
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TENX-S/collatz_conjecture" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTENX-S%2Fcollatz_conjecture", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTENX-S%2Fcollatz_conjecture'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2460adc17896a2f2754d2f900f48f0029c38b465
[INFO] testing TENX-S/collatz_conjecture against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTENX-S%2Fcollatz_conjecture" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TENX-S/collatz_conjecture on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-50/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/TENX-S/collatz_conjecture
[INFO] finished tweaking git repo https://github.com/TENX-S/collatz_conjecture
[INFO] tweaked toml for git repo https://github.com/TENX-S/collatz_conjecture written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/TENX-S/collatz_conjecture already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0af56d8fa3f778846fe0a3300c22c27cef6dd46218e5bcdef3522d154b0c1843
[INFO] running `Command { std: "docker" "start" "-a" "0af56d8fa3f778846fe0a3300c22c27cef6dd46218e5bcdef3522d154b0c1843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0af56d8fa3f778846fe0a3300c22c27cef6dd46218e5bcdef3522d154b0c1843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af56d8fa3f778846fe0a3300c22c27cef6dd46218e5bcdef3522d154b0c1843", kill_on_drop: false }`
[INFO] [stdout] 0af56d8fa3f778846fe0a3300c22c27cef6dd46218e5bcdef3522d154b0c1843
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd747aadcc0f1878d0b7e1b955cb6f05e220e01bc5c83b960b4499a3a27528df
[INFO] running `Command { std: "docker" "start" "-a" "dd747aadcc0f1878d0b7e1b955cb6f05e220e01bc5c83b960b4499a3a27528df", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling instant v0.1.11
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.22
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling mimalloc v0.1.26
[INFO] [stderr]    Compiling collatz_conjecture v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `target` is never read
[INFO] [stdout]   --> src/bin/single_threaded_without_heap.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             target += 1;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.57s
[INFO] running `Command { std: "docker" "inspect" "dd747aadcc0f1878d0b7e1b955cb6f05e220e01bc5c83b960b4499a3a27528df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd747aadcc0f1878d0b7e1b955cb6f05e220e01bc5c83b960b4499a3a27528df", kill_on_drop: false }`
[INFO] [stdout] dd747aadcc0f1878d0b7e1b955cb6f05e220e01bc5c83b960b4499a3a27528df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6838e7d394be0e8b3262c359eba3d4ee3051efb9bef14527aeea477c0dece2f2
[INFO] running `Command { std: "docker" "start" "-a" "6838e7d394be0e8b3262c359eba3d4ee3051efb9bef14527aeea477c0dece2f2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling collatz_conjecture v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `target` is never read
[INFO] [stdout]   --> src/bin/single_threaded_without_heap.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             target += 1;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.90s
[INFO] running `Command { std: "docker" "inspect" "6838e7d394be0e8b3262c359eba3d4ee3051efb9bef14527aeea477c0dece2f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6838e7d394be0e8b3262c359eba3d4ee3051efb9bef14527aeea477c0dece2f2", kill_on_drop: false }`
[INFO] [stdout] 6838e7d394be0e8b3262c359eba3d4ee3051efb9bef14527aeea477c0dece2f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 952c538d88713034037b31288dadb65c56e3848bebb887be487a497f138747a7
[INFO] running `Command { std: "docker" "start" "-a" "952c538d88713034037b31288dadb65c56e3848bebb887be487a497f138747a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `target` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/bin/single_threaded_without_heap.rs:34:13
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 34 |             target += 1;
[INFO] [stdout] 
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `collatz_conjecture` (bin "single_threaded_without_heap" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.54s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel-266cf4ad760e5ed3)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel_without_heap-00679a9fff8e53e9)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel_without_verify-58dc18e7d663bb74)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/single_threaded-a2fd16d7f659d4dc)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/single_threaded_without_heap-6ac305c6392b5617)
[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" "952c538d88713034037b31288dadb65c56e3848bebb887be487a497f138747a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "952c538d88713034037b31288dadb65c56e3848bebb887be487a497f138747a7", kill_on_drop: false }`
[INFO] [stdout] 952c538d88713034037b31288dadb65c56e3848bebb887be487a497f138747a7