[INFO] updating cached repository nathanfaucett/rs-atomic
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nathanfaucett/rs-atomic
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nathanfaucett/rs-atomic" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/nathanfaucett/rs-atomic"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/nathanfaucett/rs-atomic'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nathanfaucett/rs-atomic" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/nathanfaucett/rs-atomic"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/nathanfaucett/rs-atomic'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f9ad29d2d4faff6bfe9ae37b3815f3670177ba62
[INFO] sha for GitHub repo nathanfaucett/rs-atomic: f9ad29d2d4faff6bfe9ae37b3815f3670177ba62
[INFO] validating manifest of nathanfaucett/rs-atomic on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nathanfaucett/rs-atomic on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nathanfaucett/rs-atomic
[INFO] finished frobbing nathanfaucett/rs-atomic
[INFO] frobbed toml for nathanfaucett/rs-atomic written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/nathanfaucett/rs-atomic/Cargo.toml
[INFO] started frobbing nathanfaucett/rs-atomic
[INFO] finished frobbing nathanfaucett/rs-atomic
[INFO] frobbed toml for nathanfaucett/rs-atomic written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/nathanfaucett/rs-atomic/Cargo.toml
[INFO] crate nathanfaucett/rs-atomic already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nathanfaucett/rs-atomic against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-1/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/nathanfaucett/rs-atomic:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5b90bd5c0183f88654c4e8458c077f4e537d282fbffb02e012aa108feeefe709
[INFO] running `"docker" "start" "-a" "5b90bd5c0183f88654c4e8458c077f4e537d282fbffb02e012aa108feeefe709"`
[INFO] [stderr]     Checking atomic v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking prng v0.1.0 (https://github.com/nathanfaucett/rs-prng.git#ce176410)
[INFO] [stderr] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(alloc)]
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `alloc::arc`
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/rs-prng-45c50210de0d12df/ce17641/src/atomic_prng.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | use alloc::arc::Arc;
[INFO] [stderr]   |            ^^^ could not find `arc` in `alloc`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `prng`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5b90bd5c0183f88654c4e8458c077f4e537d282fbffb02e012aa108feeefe709"`
[INFO] running `"docker" "rm" "-f" "5b90bd5c0183f88654c4e8458c077f4e537d282fbffb02e012aa108feeefe709"`
[INFO] [stdout] 5b90bd5c0183f88654c4e8458c077f4e537d282fbffb02e012aa108feeefe709