[INFO] fetching crate reverse_differentiable 0.1.2...
[INFO] testing reverse_differentiable-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate reverse_differentiable 0.1.2 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate reverse_differentiable 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reverse_differentiable 0.1.2
[INFO] finished tweaking crates.io crate reverse_differentiable 0.1.2
[INFO] tweaked toml for crates.io crate reverse_differentiable 0.1.2 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef2390ae889f9b4884d09d87ddfdd570917a78580b6d102d5e40e62b8fc4c74b
[INFO] running `Command { std: "docker" "start" "-a" "ef2390ae889f9b4884d09d87ddfdd570917a78580b6d102d5e40e62b8fc4c74b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef2390ae889f9b4884d09d87ddfdd570917a78580b6d102d5e40e62b8fc4c74b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2390ae889f9b4884d09d87ddfdd570917a78580b6d102d5e40e62b8fc4c74b", kill_on_drop: false }`
[INFO] [stdout] ef2390ae889f9b4884d09d87ddfdd570917a78580b6d102d5e40e62b8fc4c74b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c96d3db39412e7df3c57ef20221a510cb9258caf8663d8ecec339762c3cf1959
[INFO] running `Command { std: "docker" "start" "-a" "c96d3db39412e7df3c57ef20221a510cb9258caf8663d8ecec339762c3cf1959", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling reverse_differentiable v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "c96d3db39412e7df3c57ef20221a510cb9258caf8663d8ecec339762c3cf1959", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c96d3db39412e7df3c57ef20221a510cb9258caf8663d8ecec339762c3cf1959", kill_on_drop: false }`
[INFO] [stdout] c96d3db39412e7df3c57ef20221a510cb9258caf8663d8ecec339762c3cf1959
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baefaf75fe61d5325d7da14b8f5c47df8008da24540073f2e1be61ed921e137e
[INFO] running `Command { std: "docker" "start" "-a" "baefaf75fe61d5325d7da14b8f5c47df8008da24540073f2e1be61ed921e137e", kill_on_drop: false }`
[INFO] [stderr]    Compiling reverse_differentiable v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "baefaf75fe61d5325d7da14b8f5c47df8008da24540073f2e1be61ed921e137e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baefaf75fe61d5325d7da14b8f5c47df8008da24540073f2e1be61ed921e137e", kill_on_drop: false }`
[INFO] [stdout] baefaf75fe61d5325d7da14b8f5c47df8008da24540073f2e1be61ed921e137e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d8e16bcc7d93328d3297aa510bd492d5f956f59a7424cae2633c4bbf5aa02ce1
[INFO] running `Command { std: "docker" "start" "-a" "d8e16bcc7d93328d3297aa510bd492d5f956f59a7424cae2633c4bbf5aa02ce1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/reverse_differentiable-7249beacdbc05aa7)
[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]    Doc-tests reverse_differentiable
[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" "d8e16bcc7d93328d3297aa510bd492d5f956f59a7424cae2633c4bbf5aa02ce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8e16bcc7d93328d3297aa510bd492d5f956f59a7424cae2633c4bbf5aa02ce1", kill_on_drop: false }`
[INFO] [stdout] d8e16bcc7d93328d3297aa510bd492d5f956f59a7424cae2633c4bbf5aa02ce1