[INFO] crate hashids 1.0.0 is already in cache
[INFO] testing hashids-1.0.0 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate hashids 1.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate hashids 1.0.0 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate hashids 1.0.0
[INFO] finished tweaking crates.io crate hashids 1.0.0
[INFO] tweaked toml for crates.io crate hashids 1.0.0 written to /workspace/builds/worker-6/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-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" "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] 52c8564e5fdb1982e3d02685caae426d64881d20e7f63ee7bcf2b20c1f20d4a1
[INFO] running `"docker" "start" "-a" "52c8564e5fdb1982e3d02685caae426d64881d20e7f63ee7bcf2b20c1f20d4a1"`
[INFO] [stderr]    Compiling hashids v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unknown lint: `unstable`
[INFO] [stderr]  --> src/lib.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![allow(unstable)]
[INFO] [stderr]   |          ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `regex`
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | extern crate regex;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `hashids`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "52c8564e5fdb1982e3d02685caae426d64881d20e7f63ee7bcf2b20c1f20d4a1"`
[INFO] running `"docker" "rm" "-f" "52c8564e5fdb1982e3d02685caae426d64881d20e7f63ee7bcf2b20c1f20d4a1"`
[INFO] [stdout] 52c8564e5fdb1982e3d02685caae426d64881d20e7f63ee7bcf2b20c1f20d4a1