[INFO] crate flamme-rouge 0.1.0 is already in cache
[INFO] extracting crate flamme-rouge 0.1.0 into work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/flamme-rouge/0.1.0
[INFO] extracting crate flamme-rouge 0.1.0 into work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/flamme-rouge/0.1.0
[INFO] validating manifest of flamme-rouge-0.1.0 on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of flamme-rouge-0.1.0 on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing flamme-rouge-0.1.0
[INFO] finished frobbing flamme-rouge-0.1.0
[INFO] frobbed toml for flamme-rouge-0.1.0 written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/flamme-rouge/0.1.0/Cargo.toml
[INFO] started frobbing flamme-rouge-0.1.0
[INFO] finished frobbing flamme-rouge-0.1.0
[INFO] frobbed toml for flamme-rouge-0.1.0 written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/flamme-rouge/0.1.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking flamme-rouge-0.1.0 against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-4/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/flamme-rouge/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 77273a8bff42a7b388d33d315b0497f87ccaaa0569d6ec2760da2cb96aef5f66
[INFO] running `"docker" "start" "-a" "77273a8bff42a7b388d33d315b0497f87ccaaa0569d6ec2760da2cb96aef5f66"`
[INFO] [stderr]     Checking card_deck v0.1.8
[INFO] [stderr]     Checking flamme-rouge v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `scores` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:41:24
[INFO] [stderr]    |
[INFO] [stderr] 40 |         match scores.get(&winner) {
[INFO] [stderr]    |               ------ immutable borrow occurs here
[INFO] [stderr] 41 |             Some(n) => scores.insert(winner, n + 1),
[INFO] [stderr]    |                        ^^^^^^                - immutable borrow later used here
[INFO] [stderr]    |                        |
[INFO] [stderr]    |                        mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(mutable_borrow_reservation_conflict)] on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `scores` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:41:24
[INFO] [stderr]    |
[INFO] [stderr] 40 |         match scores.get(&winner) {
[INFO] [stderr]    |               ------ immutable borrow occurs here
[INFO] [stderr] 41 |             Some(n) => scores.insert(winner, n + 1),
[INFO] [stderr]    |                        ^^^^^^                - immutable borrow later used here
[INFO] [stderr]    |                        |
[INFO] [stderr]    |                        mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(mutable_borrow_reservation_conflict)] on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `"docker" "inspect" "77273a8bff42a7b388d33d315b0497f87ccaaa0569d6ec2760da2cb96aef5f66"`
[INFO] running `"docker" "rm" "-f" "77273a8bff42a7b388d33d315b0497f87ccaaa0569d6ec2760da2cb96aef5f66"`
[INFO] [stdout] 77273a8bff42a7b388d33d315b0497f87ccaaa0569d6ec2760da2cb96aef5f66