[INFO] cloning repository https://github.com/quody/mahjong-combinations
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quody/mahjong-combinations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 031ab0a8d46b3a8ca2a14e4de8c370764ed53881
[INFO] checking quody/mahjong-combinations against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquody%2Fmahjong-combinations" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quody/mahjong-combinations on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/quody/mahjong-combinations
[INFO] finished tweaking git repo https://github.com/quody/mahjong-combinations
[INFO] tweaked toml for git repo https://github.com/quody/mahjong-combinations written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/quody/mahjong-combinations already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] 6d8ec409c8055ec6841e8377e7eccedc0d938a889ae54cac65723623de10931c
[INFO] running `"docker" "start" "-a" "6d8ec409c8055ec6841e8377e7eccedc0d938a889ae54cac65723623de10931c"`
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking mahjong-combinations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `combinations` found for struct `std::ops::Range<{integer}>` in the current scope
[INFO] [stderr]  --> src/main.rs:7:31
[INFO] [stderr]   |
[INFO] [stderr] 7 |   let it = (1..5).into_iter().combinations(3).collect();
[INFO] [stderr]   |                               ^^^^^^^^^^^^ method not found in `std::ops::Range<{integer}>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `mahjong-combinations`.
[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[E0599]: no method named `combinations` found for struct `std::ops::Range<{integer}>` in the current scope
[INFO] [stderr]  --> src/main.rs:7:31
[INFO] [stderr]   |
[INFO] [stderr] 7 |   let it = (1..5).into_iter().combinations(3).collect();
[INFO] [stderr]   |                               ^^^^^^^^^^^^ method not found in `std::ops::Range<{integer}>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `mahjong-combinations`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6d8ec409c8055ec6841e8377e7eccedc0d938a889ae54cac65723623de10931c"`
[INFO] running `"docker" "rm" "-f" "6d8ec409c8055ec6841e8377e7eccedc0d938a889ae54cac65723623de10931c"`
[INFO] [stdout] 6d8ec409c8055ec6841e8377e7eccedc0d938a889ae54cac65723623de10931c