[INFO] cloning repository https://github.com/collinsmith/rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/collinsmith/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcollinsmith%2Frust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcollinsmith%2Frust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a198148af655a4d5fbd1b4fe7bd16c046395606b
[INFO] testing collinsmith/rust-by-example against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcollinsmith%2Frust-by-example" "/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/collinsmith/rust-by-example on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/collinsmith/rust-by-example
[INFO] finished tweaking git repo https://github.com/collinsmith/rust-by-example
[INFO] tweaked toml for git repo https://github.com/collinsmith/rust-by-example written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/collinsmith/rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a59524b3d6871942bb0fed970c7d8f571b70f919a7bfa2a53ab0f340ad59d0d
[INFO] running `Command { std: "docker" "start" "-a" "3a59524b3d6871942bb0fed970c7d8f571b70f919a7bfa2a53ab0f340ad59d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a59524b3d6871942bb0fed970c7d8f571b70f919a7bfa2a53ab0f340ad59d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a59524b3d6871942bb0fed970c7d8f571b70f919a7bfa2a53ab0f340ad59d0d", kill_on_drop: false }`
[INFO] [stdout] 3a59524b3d6871942bb0fed970c7d8f571b70f919a7bfa2a53ab0f340ad59d0d
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a1f1d9310c7c45059438f8ca8a26c9adef3c357a12e39311515edee72697723
[INFO] running `Command { std: "docker" "start" "-a" "4a1f1d9310c7c45059438f8ca8a26c9adef3c357a12e39311515edee72697723", kill_on_drop: false }`
[INFO] [stderr]    Compiling formatting v0.1.0 (/opt/rustwide/workdir/1-2-3-formatting)
[INFO] [stderr]    Compiling tuples v0.1.0 (/opt/rustwide/workdir/2-2-tuples)
[INFO] [stderr]    Compiling casting v0.1.0 (/opt/rustwide/workdir/5-1-casting)
[INFO] [stderr]    Compiling display v0.1.0 (/opt/rustwide/workdir/1-2-2-display)
[INFO] [stderr]    Compiling enums v0.1.0 (/opt/rustwide/workdir/3-2-0-enums)
[INFO] [stderr]    Compiling debug v0.1.0 (/opt/rustwide/workdir/1-2-1-debug)
[INFO] [stderr]    Compiling linked_list v0.1.0 (/opt/rustwide/workdir/3-2-3-linked_list)
[INFO] [stderr]    Compiling hello-world v0.1.0 (/opt/rustwide/workdir/1-0-hello-world)
[INFO] [stderr]    Compiling comments v0.1.0 (/opt/rustwide/workdir/1-1-0-comments)
[INFO] [stderr]    Compiling arrays_and_slices v0.1.0 (/opt/rustwide/workdir/2-3-arrays_and_slices)
[INFO] [stderr]    Compiling formatted-print v0.1.0 (/opt/rustwide/workdir/1-2-0-formatted-print)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "4a1f1d9310c7c45059438f8ca8a26c9adef3c357a12e39311515edee72697723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1f1d9310c7c45059438f8ca8a26c9adef3c357a12e39311515edee72697723", kill_on_drop: false }`
[INFO] [stdout] 4a1f1d9310c7c45059438f8ca8a26c9adef3c357a12e39311515edee72697723
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7fd62b627e4459cc7eaa3cf2ce2fb539574fdcdf366547325529c7d9cecd9bc
[INFO] running `Command { std: "docker" "start" "-a" "a7fd62b627e4459cc7eaa3cf2ce2fb539574fdcdf366547325529c7d9cecd9bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling debug v0.1.0 (/opt/rustwide/workdir/1-2-1-debug)
[INFO] [stderr]    Compiling formatted-print v0.1.0 (/opt/rustwide/workdir/1-2-0-formatted-print)
[INFO] [stderr]    Compiling hello-world v0.1.0 (/opt/rustwide/workdir/1-0-hello-world)
[INFO] [stderr]    Compiling comments v0.1.0 (/opt/rustwide/workdir/1-1-0-comments)
[INFO] [stderr]    Compiling tuples v0.1.0 (/opt/rustwide/workdir/2-2-tuples)
[INFO] [stderr]    Compiling arrays_and_slices v0.1.0 (/opt/rustwide/workdir/2-3-arrays_and_slices)
[INFO] [stderr]    Compiling casting v0.1.0 (/opt/rustwide/workdir/5-1-casting)
[INFO] [stderr]    Compiling linked_list v0.1.0 (/opt/rustwide/workdir/3-2-3-linked_list)
[INFO] [stderr]    Compiling enums v0.1.0 (/opt/rustwide/workdir/3-2-0-enums)
[INFO] [stderr]    Compiling formatting v0.1.0 (/opt/rustwide/workdir/1-2-3-formatting)
[INFO] [stderr]    Compiling display v0.1.0 (/opt/rustwide/workdir/1-2-2-display)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "a7fd62b627e4459cc7eaa3cf2ce2fb539574fdcdf366547325529c7d9cecd9bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7fd62b627e4459cc7eaa3cf2ce2fb539574fdcdf366547325529c7d9cecd9bc", kill_on_drop: false }`
[INFO] [stdout] a7fd62b627e4459cc7eaa3cf2ce2fb539574fdcdf366547325529c7d9cecd9bc
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] be48770690ae621bfa540a62429c5fb79d9ee86b76ad523b02d3e2c0fb5194fe
[INFO] running `Command { std: "docker" "start" "-a" "be48770690ae621bfa540a62429c5fb79d9ee86b76ad523b02d3e2c0fb5194fe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/arrays_and_slices-f4c890c67f05a005)
[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/casting-964069257f5841c9)
[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/comments-079d999c9256c480)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/debug-50518cdad8f2ce7d)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/display-d2313fab2ef9918f)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/enums-fb7024e1fa9dfa05)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/formatted_print-2f6cbaaa2a550fe2)
[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/formatting-6b7a7bacef0de2ba)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_world-71b05f54197ec0f3)
[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 3 tests
[INFO] [stdout] test tests::hello_world_asymmetric ... ok
[INFO] [stdout] test tests::hello_world_identity ... ok
[INFO] [stdout] test tests::hello_world_symmetric ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 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/linked_list-1b628d40f3abed77)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tuples-e6530a3ccafd7bc1)
[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" "be48770690ae621bfa540a62429c5fb79d9ee86b76ad523b02d3e2c0fb5194fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be48770690ae621bfa540a62429c5fb79d9ee86b76ad523b02d3e2c0fb5194fe", kill_on_drop: false }`
[INFO] [stdout] be48770690ae621bfa540a62429c5fb79d9ee86b76ad523b02d3e2c0fb5194fe