[INFO] fetching crate experimental-test 0.1.7...
[INFO] testing experimental-test-0.1.7 against 1.55.0 for beta-1.56-1
[INFO] extracting crate experimental-test 0.1.7 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate experimental-test 0.1.7 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 experimental-test 0.1.7
[INFO] finished tweaking crates.io crate experimental-test 0.1.7
[INFO] tweaked toml for crates.io crate experimental-test 0.1.7 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate experimental-test 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] f69f62c865f00d4e41dfed825335693d30884f9bf8d25d7d6c1f413df15f7ea4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f69f62c865f00d4e41dfed825335693d30884f9bf8d25d7d6c1f413df15f7ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f69f62c865f00d4e41dfed825335693d30884f9bf8d25d7d6c1f413df15f7ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f69f62c865f00d4e41dfed825335693d30884f9bf8d25d7d6c1f413df15f7ea4", kill_on_drop: false }`
[INFO] [stdout] f69f62c865f00d4e41dfed825335693d30884f9bf8d25d7d6c1f413df15f7ea4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] a2e32dd1ee8c4d59a48274aa5fc861833a2e2e920fb3f8ace5b1172c2c2d5aba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a2e32dd1ee8c4d59a48274aa5fc861833a2e2e920fb3f8ace5b1172c2c2d5aba", kill_on_drop: false }`
[INFO] [stderr]    Compiling experimental-test v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read main.rs: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `experimental-test` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a2e32dd1ee8c4d59a48274aa5fc861833a2e2e920fb3f8ace5b1172c2c2d5aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2e32dd1ee8c4d59a48274aa5fc861833a2e2e920fb3f8ace5b1172c2c2d5aba", kill_on_drop: false }`
[INFO] [stdout] a2e32dd1ee8c4d59a48274aa5fc861833a2e2e920fb3f8ace5b1172c2c2d5aba