[INFO] updating cached repository https://github.com/timgluz/aima_8slide
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f9a9737d12c25bb5be7ccbd3e1cd2bc8fe8f409c
[INFO] checking timgluz/aima_8slide against master#6d69caba110c0c2fb90180df1cbc8be5033b91d4 for pr-69530
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimgluz%2Faima_8slide" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timgluz/aima_8slide on toolchain 6d69caba110c0c2fb90180df1cbc8be5033b91d4
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/timgluz/aima_8slide
[INFO] finished tweaking git repo https://github.com/timgluz/aima_8slide
[INFO] tweaked toml for git repo https://github.com/timgluz/aima_8slide written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/timgluz/aima_8slide already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ea43f69d5c85b6f5d2554b6eb5d9cabaa6de9745bdcd55fb97683843fd6b7bd6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ea43f69d5c85b6f5d2554b6eb5d9cabaa6de9745bdcd55fb97683843fd6b7bd6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking aima_8slide v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: use of unstable library feature 'assoc_int_consts': recently added
[INFO] [stderr]   --> src/search/uninformed.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     for limit in 0..usize::MAX {
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #68490 <https://github.com/rust-lang/rust/issues/68490> for more information
[INFO] [stderr]    = help: add `#![feature(assoc_int_consts)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SearchProblem`
[INFO] [stderr]  --> src/main.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use search::{SearchNode, SearchProblem};
[INFO] [stderr]   |                          ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `aima_8slide`.
[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[E0658]: use of unstable library feature 'assoc_int_consts': recently added
[INFO] [stderr]   --> src/search/uninformed.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     for limit in 0..usize::MAX {
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #68490 <https://github.com/rust-lang/rust/issues/68490> for more information
[INFO] [stderr]    = help: add `#![feature(assoc_int_consts)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SearchProblem`
[INFO] [stderr]  --> src/main.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use search::{SearchNode, SearchProblem};
[INFO] [stderr]   |                          ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `aima_8slide`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ea43f69d5c85b6f5d2554b6eb5d9cabaa6de9745bdcd55fb97683843fd6b7bd6"`
[INFO] running `"docker" "rm" "-f" "ea43f69d5c85b6f5d2554b6eb5d9cabaa6de9745bdcd55fb97683843fd6b7bd6"`
[INFO] [stdout] ea43f69d5c85b6f5d2554b6eb5d9cabaa6de9745bdcd55fb97683843fd6b7bd6