[INFO] cloning repository https://github.com/jsen-/rust-build-core-issue-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsen-/rust-build-core-issue-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsen-%2Frust-build-core-issue-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsen-%2Frust-build-core-issue-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67154f1d03afc67131bc3ae9014e9187205b244d
[INFO] testing jsen-/rust-build-core-issue-repro against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsen-%2Frust-build-core-issue-repro" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsen-/rust-build-core-issue-repro on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jsen-/rust-build-core-issue-repro
[INFO] finished tweaking git repo https://github.com/jsen-/rust-build-core-issue-repro
[INFO] tweaked toml for git repo https://github.com/jsen-/rust-build-core-issue-repro written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/jsen-/rust-build-core-issue-repro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2eeddcf97307ec73569e4726f66d669fb451c97370e9d60e989b22538157e9bf
[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" "2eeddcf97307ec73569e4726f66d669fb451c97370e9d60e989b22538157e9bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2eeddcf97307ec73569e4726f66d669fb451c97370e9d60e989b22538157e9bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eeddcf97307ec73569e4726f66d669fb451c97370e9d60e989b22538157e9bf", kill_on_drop: false }`
[INFO] [stdout] 2eeddcf97307ec73569e4726f66d669fb451c97370e9d60e989b22538157e9bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 2f5ef50e8d6d2c8362f6462c136649628e4f0f6d8d84cf9c945e0e992e23c38b
[INFO] running `Command { std: "docker" "start" "-a" "2f5ef50e8d6d2c8362f6462c136649628e4f0f6d8d84cf9c945e0e992e23c38b", kill_on_drop: false }`
[INFO] [stderr]    Compiling test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `core`
[INFO] [stdout]   |
[INFO] [stdout]   = note: the `avr-unknown-gnu-atmega328` target may not be installed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2f5ef50e8d6d2c8362f6462c136649628e4f0f6d8d84cf9c945e0e992e23c38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5ef50e8d6d2c8362f6462c136649628e4f0f6d8d84cf9c945e0e992e23c38b", kill_on_drop: false }`
[INFO] [stdout] 2f5ef50e8d6d2c8362f6462c136649628e4f0f6d8d84cf9c945e0e992e23c38b