[INFO] fetching crate croaring-mw 0.4.5...
[INFO] testing croaring-mw-0.4.5 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate croaring-mw 0.4.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate croaring-mw 0.4.5 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate croaring-mw 0.4.5
[INFO] finished tweaking crates.io crate croaring-mw 0.4.5
[INFO] tweaked toml for crates.io crate croaring-mw 0.4.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92dd1b45d801461cc49ad799d84eb8fb1db863d20f6e8e5d4dc04b28c9de28e1
[INFO] running `"docker" "start" "-a" "92dd1b45d801461cc49ad799d84eb8fb1db863d20f6e8e5d4dc04b28c9de28e1"`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling croaring-sys-mw v0.4.5
[INFO] [stderr]    Compiling croaring-mw v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.04s
[INFO] running `"docker" "inspect" "92dd1b45d801461cc49ad799d84eb8fb1db863d20f6e8e5d4dc04b28c9de28e1"`
[INFO] running `"docker" "rm" "-f" "92dd1b45d801461cc49ad799d84eb8fb1db863d20f6e8e5d4dc04b28c9de28e1"`
[INFO] [stdout] 92dd1b45d801461cc49ad799d84eb8fb1db863d20f6e8e5d4dc04b28c9de28e1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4efa35f633139cc613df1fb9aca8989ea6a8146bb59083e32721db750885997b
[INFO] running `"docker" "start" "-a" "4efa35f633139cc613df1fb9aca8989ea6a8146bb59083e32721db750885997b"`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling roaring v0.5.2
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling proptest v0.9.6
[INFO] [stderr]    Compiling croaring-mw v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `croaring`
[INFO] [stderr]  --> tests/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate croaring;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `croaring-mw`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4efa35f633139cc613df1fb9aca8989ea6a8146bb59083e32721db750885997b"`
[INFO] running `"docker" "rm" "-f" "4efa35f633139cc613df1fb9aca8989ea6a8146bb59083e32721db750885997b"`
[INFO] [stdout] 4efa35f633139cc613df1fb9aca8989ea6a8146bb59083e32721db750885997b