[INFO] cloning repository https://github.com/niketkumar/combinations_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/niketkumar/combinations_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniketkumar%2Fcombinations_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniketkumar%2Fcombinations_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45dab151a5128bc8b47f7b178dcd0a44eef264e6
[INFO] testing niketkumar/combinations_rust against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniketkumar%2Fcombinations_rust" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/niketkumar/combinations_rust on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/niketkumar/combinations_rust
[INFO] finished tweaking git repo https://github.com/niketkumar/combinations_rust
[INFO] tweaked toml for git repo https://github.com/niketkumar/combinations_rust written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/niketkumar/combinations_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd50ac517e53e77f46eee557b6218cfb508279ad931cb28a8d72c7d95f240f40
[INFO] running `Command { std: "docker" "start" "-a" "cd50ac517e53e77f46eee557b6218cfb508279ad931cb28a8d72c7d95f240f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd50ac517e53e77f46eee557b6218cfb508279ad931cb28a8d72c7d95f240f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd50ac517e53e77f46eee557b6218cfb508279ad931cb28a8d72c7d95f240f40", kill_on_drop: false }`
[INFO] [stdout] cd50ac517e53e77f46eee557b6218cfb508279ad931cb28a8d72c7d95f240f40
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6885e9c8966482f43d29ca6c08f4648bbf0c76b44ab38cefaf8b76c81cab1d41
[INFO] running `Command { std: "docker" "start" "-a" "6885e9c8966482f43d29ca6c08f4648bbf0c76b44ab38cefaf8b76c81cab1d41", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
[INFO] running `Command { std: "docker" "inspect" "6885e9c8966482f43d29ca6c08f4648bbf0c76b44ab38cefaf8b76c81cab1d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6885e9c8966482f43d29ca6c08f4648bbf0c76b44ab38cefaf8b76c81cab1d41", kill_on_drop: false }`
[INFO] [stdout] 6885e9c8966482f43d29ca6c08f4648bbf0c76b44ab38cefaf8b76c81cab1d41
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7d5ca90d6a1888a9152943721724b2352f6cd9ea23e5bdbfda3094b1eccd3a1
[INFO] running `Command { std: "docker" "start" "-a" "f7d5ca90d6a1888a9152943721724b2352f6cd9ea23e5bdbfda3094b1eccd3a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "f7d5ca90d6a1888a9152943721724b2352f6cd9ea23e5bdbfda3094b1eccd3a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7d5ca90d6a1888a9152943721724b2352f6cd9ea23e5bdbfda3094b1eccd3a1", kill_on_drop: false }`
[INFO] [stdout] f7d5ca90d6a1888a9152943721724b2352f6cd9ea23e5bdbfda3094b1eccd3a1
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b3f9a18946d1180df77eca371d8ffbace7cc833a5a2e91d627c3b494bef3a6a2
[INFO] running `Command { std: "docker" "start" "-a" "b3f9a18946d1180df77eca371d8ffbace7cc833a5a2e91d627c3b494bef3a6a2", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/combinations-349f4f26318a7f76)
[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" "b3f9a18946d1180df77eca371d8ffbace7cc833a5a2e91d627c3b494bef3a6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3f9a18946d1180df77eca371d8ffbace7cc833a5a2e91d627c3b494bef3a6a2", kill_on_drop: false }`
[INFO] [stdout] b3f9a18946d1180df77eca371d8ffbace7cc833a5a2e91d627c3b494bef3a6a2