[INFO] fetching crate develop_debug 0.4.1...
[INFO] testing develop_debug-0.4.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate develop_debug 0.4.1 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate develop_debug 0.4.1 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 develop_debug 0.4.1
[INFO] finished tweaking crates.io crate develop_debug 0.4.1
[INFO] tweaked toml for crates.io crate develop_debug 0.4.1 written to /workspace/builds/worker-28/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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 0d88e51f607c3078a4ec660668b327494ed442b0d82098d09a42e61b908eaf99
[INFO] running `Command { std: "docker" "start" "-a" "0d88e51f607c3078a4ec660668b327494ed442b0d82098d09a42e61b908eaf99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d88e51f607c3078a4ec660668b327494ed442b0d82098d09a42e61b908eaf99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d88e51f607c3078a4ec660668b327494ed442b0d82098d09a42e61b908eaf99", kill_on_drop: false }`
[INFO] [stdout] 0d88e51f607c3078a4ec660668b327494ed442b0d82098d09a42e61b908eaf99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] e03cb91d66b97d140a5c365428541318aa4df2a58f3c90148f0890093968829b
[INFO] running `Command { std: "docker" "start" "-a" "e03cb91d66b97d140a5c365428541318aa4df2a58f3c90148f0890093968829b", kill_on_drop: false }`
[INFO] [stderr]    Compiling develop_debug v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: Failed to write './README.md'. Read-only file system (os error 30)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "e03cb91d66b97d140a5c365428541318aa4df2a58f3c90148f0890093968829b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03cb91d66b97d140a5c365428541318aa4df2a58f3c90148f0890093968829b", kill_on_drop: false }`
[INFO] [stdout] e03cb91d66b97d140a5c365428541318aa4df2a58f3c90148f0890093968829b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 472646322f859938d80ed8000dcb36af3d5940f37f3f8aed2a43d3171f688ffe
[INFO] running `Command { std: "docker" "start" "-a" "472646322f859938d80ed8000dcb36af3d5940f37f3f8aed2a43d3171f688ffe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling develop_debug v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: Failed to write './README.md'. Read-only file system (os error 30)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "472646322f859938d80ed8000dcb36af3d5940f37f3f8aed2a43d3171f688ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "472646322f859938d80ed8000dcb36af3d5940f37f3f8aed2a43d3171f688ffe", kill_on_drop: false }`
[INFO] [stdout] 472646322f859938d80ed8000dcb36af3d5940f37f3f8aed2a43d3171f688ffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 65534ff0807843be1f8401e36f5f981ba8150f7a4e32ca25a1e37dbcd751f776
[INFO] running `Command { std: "docker" "start" "-a" "65534ff0807843be1f8401e36f5f981ba8150f7a4e32ca25a1e37dbcd751f776", kill_on_drop: false }`
[INFO] [stderr]    Compiling develop_debug v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: Failed to write './README.md'. Read-only file system (os error 30)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.99s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/develop_debug-7256c0bc878cf291)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/how_to_use.rs (/opt/rustwide/target/debug/deps/how_to_use-fc1a02494719a7ea)
[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 2 tests
[INFO] [stdout] test use_develop_debug ... ok
[INFO] [stdout] test use_develop_debug_shortcut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests develop_debug
[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" "65534ff0807843be1f8401e36f5f981ba8150f7a4e32ca25a1e37dbcd751f776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65534ff0807843be1f8401e36f5f981ba8150f7a4e32ca25a1e37dbcd751f776", kill_on_drop: false }`
[INFO] [stdout] 65534ff0807843be1f8401e36f5f981ba8150f7a4e32ca25a1e37dbcd751f776