[INFO] fetching crate ds-learn-rust 0.1.0...
[INFO] testing ds-learn-rust-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate ds-learn-rust 0.1.0 into /workspace/builds/worker-70/source
[INFO] validating manifest of crates.io crate ds-learn-rust 0.1.0 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 ds-learn-rust 0.1.0
[INFO] finished tweaking crates.io crate ds-learn-rust 0.1.0
[INFO] tweaked toml for crates.io crate ds-learn-rust 0.1.0 written to /workspace/builds/worker-70/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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] 7b6ba4182fade534da3d361ad1e18ceeae5bef59bd1b71a6a51ce78cc5d88b73
[INFO] running `Command { std: "docker" "start" "-a" "7b6ba4182fade534da3d361ad1e18ceeae5bef59bd1b71a6a51ce78cc5d88b73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b6ba4182fade534da3d361ad1e18ceeae5bef59bd1b71a6a51ce78cc5d88b73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b6ba4182fade534da3d361ad1e18ceeae5bef59bd1b71a6a51ce78cc5d88b73", kill_on_drop: false }`
[INFO] [stdout] 7b6ba4182fade534da3d361ad1e18ceeae5bef59bd1b71a6a51ce78cc5d88b73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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] a8e55cf99c93d1fdbd21a0fe38db3f21ad3e847afd14733007579a4ab2be776d
[INFO] running `Command { std: "docker" "start" "-a" "a8e55cf99c93d1fdbd21a0fe38db3f21ad3e847afd14733007579a4ab2be776d", kill_on_drop: false }`
[INFO] [stderr]    Compiling ds-learn-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "a8e55cf99c93d1fdbd21a0fe38db3f21ad3e847afd14733007579a4ab2be776d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e55cf99c93d1fdbd21a0fe38db3f21ad3e847afd14733007579a4ab2be776d", kill_on_drop: false }`
[INFO] [stdout] a8e55cf99c93d1fdbd21a0fe38db3f21ad3e847afd14733007579a4ab2be776d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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] efa1c3b06c173a52165a5cc131e9e38ef51068469ecc70210bd2ce25e56245f5
[INFO] running `Command { std: "docker" "start" "-a" "efa1c3b06c173a52165a5cc131e9e38ef51068469ecc70210bd2ce25e56245f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling ds-learn-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "efa1c3b06c173a52165a5cc131e9e38ef51068469ecc70210bd2ce25e56245f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efa1c3b06c173a52165a5cc131e9e38ef51068469ecc70210bd2ce25e56245f5", kill_on_drop: false }`
[INFO] [stdout] efa1c3b06c173a52165a5cc131e9e38ef51068469ecc70210bd2ce25e56245f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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] 0a7ac79024682595a5f73aeb628e5f6fa64ed267302791e476aa839509b509e2
[INFO] running `Command { std: "docker" "start" "-a" "0a7ac79024682595a5f73aeb628e5f6fa64ed267302791e476aa839509b509e2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ds_learn_rust-636ca513dcca413a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests ds-learn-rust
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "0a7ac79024682595a5f73aeb628e5f6fa64ed267302791e476aa839509b509e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a7ac79024682595a5f73aeb628e5f6fa64ed267302791e476aa839509b509e2", kill_on_drop: false }`
[INFO] [stdout] 0a7ac79024682595a5f73aeb628e5f6fa64ed267302791e476aa839509b509e2