[INFO] updating cached repository zni/rlox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zni/rlox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zni/rlox" "work/ex/beta-1.38-1/sources/1.37.0/gh/zni/rlox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zni/rlox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zni/rlox" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zni/rlox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zni/rlox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7f3881879d8098388f9fae1f733d80423b31abf
[INFO] sha for GitHub repo zni/rlox: b7f3881879d8098388f9fae1f733d80423b31abf
[INFO] validating manifest of zni/rlox 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 zni/rlox 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 zni/rlox
[INFO] finished frobbing zni/rlox
[INFO] frobbed toml for zni/rlox written to work/ex/beta-1.38-1/sources/1.37.0/gh/zni/rlox/Cargo.toml
[INFO] started frobbing zni/rlox
[INFO] finished frobbing zni/rlox
[INFO] frobbed toml for zni/rlox written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zni/rlox/Cargo.toml
[INFO] crate zni/rlox 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 zni/rlox 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-7/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/zni/rlox:/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] 240213dbc083cb345b27dae5cd47b07eb33a53439090e3434c60bbe75b879117
[INFO] running `"docker" "start" "-a" "240213dbc083cb345b27dae5cd47b07eb33a53439090e3434c60bbe75b879117"`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/scanner.rs:285:24
[INFO] [stderr]     |
[INFO] [stderr] 284 |         match self.reserved.get(&slice) {
[INFO] [stderr]     |               ------------- immutable borrow occurs here
[INFO] [stderr] 285 |             Some(t) => self.add_token(t.clone()),
[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 1.85s
[INFO] running `"docker" "inspect" "240213dbc083cb345b27dae5cd47b07eb33a53439090e3434c60bbe75b879117"`
[INFO] running `"docker" "rm" "-f" "240213dbc083cb345b27dae5cd47b07eb33a53439090e3434c60bbe75b879117"`
[INFO] [stdout] 240213dbc083cb345b27dae5cd47b07eb33a53439090e3434c60bbe75b879117
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/zni/rlox:/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] 585523f4f29580fccdb6fe76f5b369ddb3542f72c247922a01b51cc0c3e329da
[INFO] running `"docker" "start" "-a" "585523f4f29580fccdb6fe76f5b369ddb3542f72c247922a01b51cc0c3e329da"`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/scanner.rs:285:24
[INFO] [stderr]     |
[INFO] [stderr] 284 |         match self.reserved.get(&slice) {
[INFO] [stderr]     |               ------------- immutable borrow occurs here
[INFO] [stderr] 285 |             Some(t) => self.add_token(t.clone()),
[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 0.85s
[INFO] running `"docker" "inspect" "585523f4f29580fccdb6fe76f5b369ddb3542f72c247922a01b51cc0c3e329da"`
[INFO] running `"docker" "rm" "-f" "585523f4f29580fccdb6fe76f5b369ddb3542f72c247922a01b51cc0c3e329da"`
[INFO] [stdout] 585523f4f29580fccdb6fe76f5b369ddb3542f72c247922a01b51cc0c3e329da
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/zni/rlox:/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] c64d45c36c1d72c6aa2c5e7478395811812cbf51709f8818e30d84f7459f055e
[INFO] running `"docker" "start" "-a" "c64d45c36c1d72c6aa2c5e7478395811812cbf51709f8818e30d84f7459f055e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rlox-9acddc7010de36c8
[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" "c64d45c36c1d72c6aa2c5e7478395811812cbf51709f8818e30d84f7459f055e"`
[INFO] running `"docker" "rm" "-f" "c64d45c36c1d72c6aa2c5e7478395811812cbf51709f8818e30d84f7459f055e"`
[INFO] [stdout] c64d45c36c1d72c6aa2c5e7478395811812cbf51709f8818e30d84f7459f055e