[INFO] cloning repository https://github.com/ymgyt/baremetal-handson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/baremetal-handson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fbaremetal-handson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fbaremetal-handson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c35c3913952429c20eab592d726e546cc84f5600
[INFO] testing ymgyt/baremetal-handson against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fbaremetal-handson" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymgyt/baremetal-handson on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ymgyt/baremetal-handson
[INFO] finished tweaking git repo https://github.com/ymgyt/baremetal-handson
[INFO] tweaked toml for git repo https://github.com/ymgyt/baremetal-handson written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/baremetal-handson already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdc49a3f5c0938fb15433a0b1574bb7867c848a0d1f55f3ff4b1d4251fdd365c
[INFO] running `Command { std: "docker" "start" "-a" "bdc49a3f5c0938fb15433a0b1574bb7867c848a0d1f55f3ff4b1d4251fdd365c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdc49a3f5c0938fb15433a0b1574bb7867c848a0d1f55f3ff4b1d4251fdd365c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdc49a3f5c0938fb15433a0b1574bb7867c848a0d1f55f3ff4b1d4251fdd365c", kill_on_drop: false }`
[INFO] [stdout] bdc49a3f5c0938fb15433a0b1574bb7867c848a0d1f55f3ff4b1d4251fdd365c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 373c02c16dfd4eb4d5348eb646316bfb312915fb79c6892e59168561db92e15b
[INFO] running `Command { std: "docker" "start" "-a" "373c02c16dfd4eb4d5348eb646316bfb312915fb79c6892e59168561db92e15b", kill_on_drop: false }`
[INFO] [stderr]    Compiling baremetal-handson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: requires `start` lang_item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `baremetal-handson`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "373c02c16dfd4eb4d5348eb646316bfb312915fb79c6892e59168561db92e15b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "373c02c16dfd4eb4d5348eb646316bfb312915fb79c6892e59168561db92e15b", kill_on_drop: false }`
[INFO] [stdout] 373c02c16dfd4eb4d5348eb646316bfb312915fb79c6892e59168561db92e15b