[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 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 30ad4e0871245e636a0c95df86a8260ed957e5e8e1dd9119a7f14fb38e48f316
[INFO] running `"docker" "start" "-a" "30ad4e0871245e636a0c95df86a8260ed957e5e8e1dd9119a7f14fb38e48f316"`
[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 2.03s
[INFO] running `"docker" "inspect" "30ad4e0871245e636a0c95df86a8260ed957e5e8e1dd9119a7f14fb38e48f316"`
[INFO] running `"docker" "rm" "-f" "30ad4e0871245e636a0c95df86a8260ed957e5e8e1dd9119a7f14fb38e48f316"`
[INFO] [stdout] 30ad4e0871245e636a0c95df86a8260ed957e5e8e1dd9119a7f14fb38e48f316
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 90da845abc6932174e16eaccc75761761d30f5245447ac51525abaaede5f7db9
[INFO] running `"docker" "start" "-a" "90da845abc6932174e16eaccc75761761d30f5245447ac51525abaaede5f7db9"`
[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 0.66s
[INFO] running `"docker" "inspect" "90da845abc6932174e16eaccc75761761d30f5245447ac51525abaaede5f7db9"`
[INFO] running `"docker" "rm" "-f" "90da845abc6932174e16eaccc75761761d30f5245447ac51525abaaede5f7db9"`
[INFO] [stdout] 90da845abc6932174e16eaccc75761761d30f5245447ac51525abaaede5f7db9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] f24e7388f1ee6ce9bef651466d6142bbb82c58fc8b41f78fdf24057b54fd40cd
[INFO] running `"docker" "start" "-a" "f24e7388f1ee6ce9bef651466d6142bbb82c58fc8b41f78fdf24057b54fd40cd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rlox-153d0d76fdd7ba5a
[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" "f24e7388f1ee6ce9bef651466d6142bbb82c58fc8b41f78fdf24057b54fd40cd"`
[INFO] running `"docker" "rm" "-f" "f24e7388f1ee6ce9bef651466d6142bbb82c58fc8b41f78fdf24057b54fd40cd"`
[INFO] [stdout] f24e7388f1ee6ce9bef651466d6142bbb82c58fc8b41f78fdf24057b54fd40cd