[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/beta-1.38-1/sources/1.37.0/gh/krlvi/wc-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/krlvi/wc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/krlvi/wc-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krlvi/wc-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of krlvi/wc-rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing krlvi/wc-rs against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 3a7551f794ff30b6ffff87e7e8c6f0786e22cabe0436a4834c2b3289a71068c5
[INFO] running `"docker" "start" "-a" "3a7551f794ff30b6ffff87e7e8c6f0786e22cabe0436a4834c2b3289a71068c5"`
[INFO] [stderr]    Compiling hashbrown v0.3.0
[INFO] [stderr]    Compiling spmc v0.2.2
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `"docker" "inspect" "3a7551f794ff30b6ffff87e7e8c6f0786e22cabe0436a4834c2b3289a71068c5"`
[INFO] running `"docker" "rm" "-f" "3a7551f794ff30b6ffff87e7e8c6f0786e22cabe0436a4834c2b3289a71068c5"`
[INFO] [stdout] 3a7551f794ff30b6ffff87e7e8c6f0786e22cabe0436a4834c2b3289a71068c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8317e424f3442826bb18d1c6567cfcb7c8a754bf3c5a941be8c9a2213fdd3a2f
[INFO] running `"docker" "start" "-a" "8317e424f3442826bb18d1c6567cfcb7c8a754bf3c5a941be8c9a2213fdd3a2f"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "8317e424f3442826bb18d1c6567cfcb7c8a754bf3c5a941be8c9a2213fdd3a2f"`
[INFO] running `"docker" "rm" "-f" "8317e424f3442826bb18d1c6567cfcb7c8a754bf3c5a941be8c9a2213fdd3a2f"`
[INFO] [stdout] 8317e424f3442826bb18d1c6567cfcb7c8a754bf3c5a941be8c9a2213fdd3a2f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] d28f0164f53ead3cf6dd67f318d0f9ff784c8204889d345ee206fa39bf9662f7
[INFO] running `"docker" "start" "-a" "d28f0164f53ead3cf6dd67f318d0f9ff784c8204889d345ee206fa39bf9662f7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wc_rs-562bb07680ee8f69
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d28f0164f53ead3cf6dd67f318d0f9ff784c8204889d345ee206fa39bf9662f7"`
[INFO] running `"docker" "rm" "-f" "d28f0164f53ead3cf6dd67f318d0f9ff784c8204889d345ee206fa39bf9662f7"`
[INFO] [stdout] d28f0164f53ead3cf6dd67f318d0f9ff784c8204889d345ee206fa39bf9662f7