[INFO] fetching crate mrslac 0.2.0...
[INFO] testing mrslac-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mrslac 0.2.0 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate mrslac 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mrslac 0.2.0
[INFO] finished tweaking crates.io crate mrslac 0.2.0
[INFO] tweaked toml for crates.io crate mrslac 0.2.0 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1734550d62ac1c77fec0a6d6198a0d216f24789191f69bd29393962684bb79f
[INFO] running `Command { std: "docker" "start" "-a" "f1734550d62ac1c77fec0a6d6198a0d216f24789191f69bd29393962684bb79f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1734550d62ac1c77fec0a6d6198a0d216f24789191f69bd29393962684bb79f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1734550d62ac1c77fec0a6d6198a0d216f24789191f69bd29393962684bb79f", kill_on_drop: false }`
[INFO] [stdout] f1734550d62ac1c77fec0a6d6198a0d216f24789191f69bd29393962684bb79f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eec628101a85159fcdcf8ecbf1bb2b8d103e4f6bf5203b229befbc64f3a0cdaa
[INFO] running `Command { std: "docker" "start" "-a" "eec628101a85159fcdcf8ecbf1bb2b8d103e4f6bf5203b229befbc64f3a0cdaa", kill_on_drop: false }`
[INFO] [stderr]    Compiling mrslac v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "eec628101a85159fcdcf8ecbf1bb2b8d103e4f6bf5203b229befbc64f3a0cdaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eec628101a85159fcdcf8ecbf1bb2b8d103e4f6bf5203b229befbc64f3a0cdaa", kill_on_drop: false }`
[INFO] [stdout] eec628101a85159fcdcf8ecbf1bb2b8d103e4f6bf5203b229befbc64f3a0cdaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9173d6c76fc135b3b4d22878beb7d3dc0b94bc39689c7200fde8e039d8a9607
[INFO] running `Command { std: "docker" "start" "-a" "e9173d6c76fc135b3b4d22878beb7d3dc0b94bc39689c7200fde8e039d8a9607", kill_on_drop: false }`
[INFO] [stderr]    Compiling mrslac v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "e9173d6c76fc135b3b4d22878beb7d3dc0b94bc39689c7200fde8e039d8a9607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9173d6c76fc135b3b4d22878beb7d3dc0b94bc39689c7200fde8e039d8a9607", kill_on_drop: false }`
[INFO] [stdout] e9173d6c76fc135b3b4d22878beb7d3dc0b94bc39689c7200fde8e039d8a9607
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 96d28a03cc70babce4e4451fa1a28dcf61956201c3606dbc78c212458ce3aefa
[INFO] running `Command { std: "docker" "start" "-a" "96d28a03cc70babce4e4451fa1a28dcf61956201c3606dbc78c212458ce3aefa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mrslac-dea76f0cf53a4e53)
[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 tests/lib.rs (/opt/rustwide/target/debug/deps/lib-6f28ea9d26f79144)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/matrix_dense_row_major.rs (/opt/rustwide/target/debug/deps/matrix_dense_row_major-46357b4657fe80b7)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test dense_basic_matrix_interface ... ok
[INFO] [stdout] test test_dense_row_major_set_zero ... ok
[INFO] [stdout] test dense_init ... 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 tests/matrix_sparse_crs.rs (/opt/rustwide/target/debug/deps/matrix_sparse_crs-7ea487f1f7f2bace)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running tests/matrix_sparse_dok.rs (/opt/rustwide/target/debug/deps/matrix_sparse_dok-9ca663cd66b254d5)
[INFO] [stdout] test sparse_crs_basic_matrix_interface ... ok
[INFO] [stdout] test sparse_crs_basic_sparse_interface ... ok
[INFO] [stdout] test sparse_crs_init ... ok
[INFO] [stdout] test test_sparse_crs_set_zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test sparse_dok_basic_matrix_interface ... ok
[INFO] [stdout] test sparse_dok_basic_sparse_interface ... ok
[INFO] [stdout] test sparse_dok_init ... ok
[INFO] [stdout] test test_sparse_dok_set_zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/vector_dense.rs (/opt/rustwide/target/debug/deps/vector_dense-98b6ff4d503ede0f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test dense_basic_matrix_interface ... ok
[INFO] [stdout] test test_dense_set_zero ... ok
[INFO] [stdout] test dense_init ... 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 tests/vector_sparse_cs.rs (/opt/rustwide/target/debug/deps/vector_sparse_cs-a3b02c7e3213c6f2)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test sparsecs_basic_matrix_interface ... ok
[INFO] [stdout] test sparsecs_given_empty_vector_when_set_ellement_then_nnz_is_one ... ok
[INFO] [stdout] test sparsecs_init ... ok
[INFO] [stdout] test sparsecs_sparse_vector_interface ... ok
[INFO] [stdout] test test_sparsecs_set_zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mrslac
[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" "96d28a03cc70babce4e4451fa1a28dcf61956201c3606dbc78c212458ce3aefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96d28a03cc70babce4e4451fa1a28dcf61956201c3606dbc78c212458ce3aefa", kill_on_drop: false }`
[INFO] [stdout] 96d28a03cc70babce4e4451fa1a28dcf61956201c3606dbc78c212458ce3aefa