[INFO] cloning repository https://github.com/asimihsan/constraint-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asimihsan/constraint-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasimihsan%2Fconstraint-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasimihsan%2Fconstraint-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5599cd06d6faee67285752029aed29de6069cc4e
[INFO] testing asimihsan/constraint-solver against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasimihsan%2Fconstraint-solver" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asimihsan/constraint-solver on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asimihsan/constraint-solver
[INFO] finished tweaking git repo https://github.com/asimihsan/constraint-solver
[INFO] tweaked toml for git repo https://github.com/asimihsan/constraint-solver written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/asimihsan/constraint-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9e44f37191c766c92fb970793dad34240fa55b515bdde2004eb203380f52e3d5
[INFO] running `Command { std: "docker" "start" "-a" "9e44f37191c766c92fb970793dad34240fa55b515bdde2004eb203380f52e3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e44f37191c766c92fb970793dad34240fa55b515bdde2004eb203380f52e3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e44f37191c766c92fb970793dad34240fa55b515bdde2004eb203380f52e3d5", kill_on_drop: false }`
[INFO] [stdout] 9e44f37191c766c92fb970793dad34240fa55b515bdde2004eb203380f52e3d5
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbd01681e7cd17708413d13b07a4649c61ca57133d37556de0ab1dad56b4c96a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fbd01681e7cd17708413d13b07a4649c61ca57133d37556de0ab1dad56b4c96a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling linked_hash_set v0.1.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling blake2 v0.9.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling local-search v0.1.0 (/opt/rustwide/workdir/local-search)
[INFO] [stderr]    Compiling nqueens v0.1.0 (/opt/rustwide/workdir/examples/nqueens)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.31s
[INFO] running `Command { std: "docker" "inspect" "fbd01681e7cd17708413d13b07a4649c61ca57133d37556de0ab1dad56b4c96a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbd01681e7cd17708413d13b07a4649c61ca57133d37556de0ab1dad56b4c96a", kill_on_drop: false }`
[INFO] [stdout] fbd01681e7cd17708413d13b07a4649c61ca57133d37556de0ab1dad56b4c96a
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb2212ad2b1848bf22bddcf98a2446b302954d7fce8d8f0b5559f6664f3ca927
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eb2212ad2b1848bf22bddcf98a2446b302954d7fce8d8f0b5559f6664f3ca927", kill_on_drop: false }`
[INFO] [stderr]    Compiling local-search v0.1.0 (/opt/rustwide/workdir/local-search)
[INFO] [stderr]    Compiling nqueens v0.1.0 (/opt/rustwide/workdir/examples/nqueens)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "eb2212ad2b1848bf22bddcf98a2446b302954d7fce8d8f0b5559f6664f3ca927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb2212ad2b1848bf22bddcf98a2446b302954d7fce8d8f0b5559f6664f3ca927", kill_on_drop: false }`
[INFO] [stdout] eb2212ad2b1848bf22bddcf98a2446b302954d7fce8d8f0b5559f6664f3ca927
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f8be12817a5933e89605ad7d25d8a4d6ccc47e63ce1b08025cc93e3cd25d8d8d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f8be12817a5933e89605ad7d25d8a4d6ccc47e63ce1b08025cc93e3cd25d8d8d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/local_search-ac063dc88c807e01)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nqueens-a2fd9e6500d20e42)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests local-search
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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] [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" "f8be12817a5933e89605ad7d25d8a4d6ccc47e63ce1b08025cc93e3cd25d8d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8be12817a5933e89605ad7d25d8a4d6ccc47e63ce1b08025cc93e3cd25d8d8d", kill_on_drop: false }`
[INFO] [stdout] f8be12817a5933e89605ad7d25d8a4d6ccc47e63ce1b08025cc93e3cd25d8d8d