[INFO] crate pwrs 1.1.0 is already in cache
[INFO] checking pwrs-1.1.0 against try#8810c24b0958114d8dbb32d878444e8956fce80f for pr-66063
[INFO] extracting crate pwrs 1.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate pwrs 1.1.0 on toolchain 8810c24b0958114d8dbb32d878444e8956fce80f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pwrs 1.1.0
[INFO] finished tweaking crates.io crate pwrs 1.1.0
[INFO] tweaked toml for crates.io crate pwrs 1.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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=allow" "-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" "+8810c24b0958114d8dbb32d878444e8956fce80f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7e56e44e8a10db7de0aa9e1546ae0f2eec55c94dcff1c4e1d1a76669bdcbb44c
[INFO] running `"docker" "start" "-a" "7e56e44e8a10db7de0aa9e1546ae0f2eec55c94dcff1c4e1d1a76669bdcbb44c"`
[INFO] [stderr]     Checking pwrs v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stderr]   --> src/main.rs:53:11
[INFO] [stderr]    |
[INFO] [stderr] 53 |     rand::sample(&mut rng, words.iter(), cfg.number)
[INFO] [stderr]    |           ^^^^^^ not found in `rand`
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use rand::seq::index::sample;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stderr]   --> src/main.rs:53:11
[INFO] [stderr]    |
[INFO] [stderr] 53 |     rand::sample(&mut rng, words.iter(), cfg.number)
[INFO] [stderr]    |           ^^^^^^ not found in `rand`
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use rand::seq::index::sample;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(test, feature(test))]
[INFO] [stderr]   |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `pwrs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `pwrs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7e56e44e8a10db7de0aa9e1546ae0f2eec55c94dcff1c4e1d1a76669bdcbb44c"`
[INFO] running `"docker" "rm" "-f" "7e56e44e8a10db7de0aa9e1546ae0f2eec55c94dcff1c4e1d1a76669bdcbb44c"`
[INFO] [stdout] 7e56e44e8a10db7de0aa9e1546ae0f2eec55c94dcff1c4e1d1a76669bdcbb44c