[INFO] updating cached repository https://github.com/ljcusack/rust-playpen
[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] de9e77d2d9a207a506493bc2d739ac4e070c4465
[INFO] checking ljcusack/rust-playpen against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fljcusack%2Frust-playpen" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ljcusack/rust-playpen on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ljcusack/rust-playpen
[INFO] finished tweaking git repo https://github.com/ljcusack/rust-playpen
[INFO] tweaked toml for git repo https://github.com/ljcusack/rust-playpen written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ljcusack/rust-playpen already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] 0a49545124a45f34f34ad5aed5303975a7affae795541e153c73b9542ec2359c
[INFO] running `"docker" "start" "-a" "0a49545124a45f34f34ad5aed5303975a7affae795541e153c73b9542ec2359c"`
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: comparison operators cannot be chained
[INFO] [stderr]  --> src/bin/consumers.rs:3:46
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let one_to_one_hundred = (1..101).collect<Vec<i32>>();
[INFO] [stderr]   |                                              ^   ^
[INFO] [stderr]   |
[INFO] [stderr] help: use `::<...>` instead of `<...>` to specify type arguments
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let one_to_one_hundred = (1..101).collect::<Vec<i32>>();
[INFO] [stderr]   |                                              ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0423]: expected function, found macro `println`
[INFO] [stderr]  --> src/bin/consumers.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |         Some(_) => println("Found a match!"),
[INFO] [stderr]   |                    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: use `!` to invoke the macro
[INFO] [stderr]   |
[INFO] [stderr] 8 |         Some(_) => println!("Found a match!"),
[INFO] [stderr]   |                           ^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/loops.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut nums = vec![1, 2, 3];
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0423`.
[INFO] [stderr] error: could not compile `hello_world`.
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/loops.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut nums = vec![1, 2, 3];
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0a49545124a45f34f34ad5aed5303975a7affae795541e153c73b9542ec2359c"`
[INFO] running `"docker" "rm" "-f" "0a49545124a45f34f34ad5aed5303975a7affae795541e153c73b9542ec2359c"`
[INFO] [stdout] 0a49545124a45f34f34ad5aed5303975a7affae795541e153c73b9542ec2359c
