[INFO] updating cached repository krlvi/wc-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/krlvi/wc-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/krlvi/wc-rs" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/krlvi/wc-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/krlvi/wc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/krlvi/wc-rs" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/krlvi/wc-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/krlvi/wc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b89da8176c9215a7ec0ca69d1f418ca06808e901
[INFO] sha for GitHub repo krlvi/wc-rs: b89da8176c9215a7ec0ca69d1f418ca06808e901
[INFO] validating manifest of krlvi/wc-rs on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of krlvi/wc-rs on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing krlvi/wc-rs
[INFO] finished frobbing krlvi/wc-rs
[INFO] frobbed toml for krlvi/wc-rs written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/krlvi/wc-rs/Cargo.toml
[INFO] started frobbing krlvi/wc-rs
[INFO] finished frobbing krlvi/wc-rs
[INFO] frobbed toml for krlvi/wc-rs written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/krlvi/wc-rs/Cargo.toml
[INFO] crate krlvi/wc-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking krlvi/wc-rs against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-0/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/krlvi/wc-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 44f2e2d5723489e8ca0134c8beed11c78ddcd1525e4e2c25f2b2e9504c0e846a
[INFO] running `"docker" "start" "-a" "44f2e2d5723489e8ca0134c8beed11c78ddcd1525e4e2c25f2b2e9504c0e846a"`
[INFO] [stderr]     Checking wc-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:19:29
[INFO] [stderr]    |
[INFO] [stderr] 18 |                         if let Some(val) = dict.get(word) {
[INFO] [stderr]    |                                            ---- immutable borrow occurs here
[INFO] [stderr] 19 |                             dict.insert(String::from(word), *val + 1);
[INFO] [stderr]    |                             ^^^^ mutable borrow occurs here ---- immutable borrow later used 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 `re` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 62 |             match re.get(&k) {
[INFO] [stderr]    |                   -- immutable borrow occurs here
[INFO] [stderr] 63 |                 Some(ev) => {
[INFO] [stderr] 64 |                     re.insert(k, ev + v);
[INFO] [stderr]    |                     ^^           -- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[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 `dict` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:19:29
[INFO] [stderr]    |
[INFO] [stderr] 18 |                         if let Some(val) = dict.get(word) {
[INFO] [stderr]    |                                            ---- immutable borrow occurs here
[INFO] [stderr] 19 |                             dict.insert(String::from(word), *val + 1);
[INFO] [stderr]    |                             ^^^^ mutable borrow occurs here ---- immutable borrow later used 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 `re` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 62 |             match re.get(&k) {
[INFO] [stderr]    |                   -- immutable borrow occurs here
[INFO] [stderr] 63 |                 Some(ev) => {
[INFO] [stderr] 64 |                     re.insert(k, ev + v);
[INFO] [stderr]    |                     ^^           -- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[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 0.49s
[INFO] running `"docker" "inspect" "44f2e2d5723489e8ca0134c8beed11c78ddcd1525e4e2c25f2b2e9504c0e846a"`
[INFO] running `"docker" "rm" "-f" "44f2e2d5723489e8ca0134c8beed11c78ddcd1525e4e2c25f2b2e9504c0e846a"`
[INFO] [stdout] 44f2e2d5723489e8ca0134c8beed11c78ddcd1525e4e2c25f2b2e9504c0e846a