[INFO] cloning repository https://github.com/huonw/unsafe_ls
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huonw/unsafe_ls" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Funsafe_ls", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Funsafe_ls'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30df3f034d0f50dee82d24929ef8d12411708172
[INFO] testing huonw/unsafe_ls against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuonw%2Funsafe_ls" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huonw/unsafe_ls on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/huonw/unsafe_ls
[INFO] finished tweaking git repo https://github.com/huonw/unsafe_ls
[INFO] tweaked toml for git repo https://github.com/huonw/unsafe_ls written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/huonw/unsafe_ls already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-8/source/src/unsafe_ls.rs` was erroneously implicitly accepted for binary `unsafe_ls`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-8/source/src/unsafe_ls.rs` was erroneously implicitly accepted for binary `unsafe_ls`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 904a02eddcebaa9915097a6da61fdde89883430c59c69ca316b8da5050e2f25d
[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" "904a02eddcebaa9915097a6da61fdde89883430c59c69ca316b8da5050e2f25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "904a02eddcebaa9915097a6da61fdde89883430c59c69ca316b8da5050e2f25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "904a02eddcebaa9915097a6da61fdde89883430c59c69ca316b8da5050e2f25d", kill_on_drop: false }`
[INFO] [stdout] 904a02eddcebaa9915097a6da61fdde89883430c59c69ca316b8da5050e2f25d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 920b78e638df8538affdc15d636203aa9f6bda4a2601bff273d622ac35ee376b
[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" "920b78e638df8538affdc15d636203aa9f6bda4a2601bff273d622ac35ee376b", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/unsafe_ls.rs` was erroneously implicitly accepted for binary `unsafe_ls`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling unsafe_ls v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `arena`
[INFO] [stdout]  --> src/unsafe_ls.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate arena;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[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 `unsafe_ls`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "920b78e638df8538affdc15d636203aa9f6bda4a2601bff273d622ac35ee376b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "920b78e638df8538affdc15d636203aa9f6bda4a2601bff273d622ac35ee376b", kill_on_drop: false }`
[INFO] [stdout] 920b78e638df8538affdc15d636203aa9f6bda4a2601bff273d622ac35ee376b