[INFO] fetching crate rust_basic_matrix 0.0.4...
[INFO] testing rust_basic_matrix-0.0.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rust_basic_matrix 0.0.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rust_basic_matrix 0.0.4 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 crates.io crate rust_basic_matrix 0.0.4
[INFO] finished tweaking crates.io crate rust_basic_matrix 0.0.4
[INFO] tweaked toml for crates.io crate rust_basic_matrix 0.0.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b451131fedbae851d43819a3667fdec86efd8250531acb3fbbdafe6d1f173cae
[INFO] running `Command { std: "docker" "start" "-a" "b451131fedbae851d43819a3667fdec86efd8250531acb3fbbdafe6d1f173cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b451131fedbae851d43819a3667fdec86efd8250531acb3fbbdafe6d1f173cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b451131fedbae851d43819a3667fdec86efd8250531acb3fbbdafe6d1f173cae", kill_on_drop: false }`
[INFO] [stdout] b451131fedbae851d43819a3667fdec86efd8250531acb3fbbdafe6d1f173cae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 15cd5481064310b199ac6549595d38ab2f52b8ccc45d2889b8ba1d6a2943c516
[INFO] running `Command { std: "docker" "start" "-a" "15cd5481064310b199ac6549595d38ab2f52b8ccc45d2889b8ba1d6a2943c516", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_basic_matrix v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "15cd5481064310b199ac6549595d38ab2f52b8ccc45d2889b8ba1d6a2943c516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cd5481064310b199ac6549595d38ab2f52b8ccc45d2889b8ba1d6a2943c516", kill_on_drop: false }`
[INFO] [stdout] 15cd5481064310b199ac6549595d38ab2f52b8ccc45d2889b8ba1d6a2943c516
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 19863de312b603be0851e67d355045106b2df2e2c04a5b98abc7baeb7073892c
[INFO] running `Command { std: "docker" "start" "-a" "19863de312b603be0851e67d355045106b2df2e2c04a5b98abc7baeb7073892c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_basic_matrix v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "19863de312b603be0851e67d355045106b2df2e2c04a5b98abc7baeb7073892c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19863de312b603be0851e67d355045106b2df2e2c04a5b98abc7baeb7073892c", kill_on_drop: false }`
[INFO] [stdout] 19863de312b603be0851e67d355045106b2df2e2c04a5b98abc7baeb7073892c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] a6e329a37ca620e555ca270269308fba303c05948bbab7180c99305e61a2ccc5
[INFO] running `Command { std: "docker" "start" "-a" "a6e329a37ca620e555ca270269308fba303c05948bbab7180c99305e61a2ccc5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_basic_matrix-819dddec514e7e21)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_basic_matrix
[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" "a6e329a37ca620e555ca270269308fba303c05948bbab7180c99305e61a2ccc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6e329a37ca620e555ca270269308fba303c05948bbab7180c99305e61a2ccc5", kill_on_drop: false }`
[INFO] [stdout] a6e329a37ca620e555ca270269308fba303c05948bbab7180c99305e61a2ccc5