[INFO] updating cached repository johshoff/find-tempo-rust-backend
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/johshoff/find-tempo-rust-backend
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/johshoff/find-tempo-rust-backend" "work/ex/beta-1.38-1/sources/1.37.0/gh/johshoff/find-tempo-rust-backend"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/johshoff/find-tempo-rust-backend'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/johshoff/find-tempo-rust-backend" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johshoff/find-tempo-rust-backend"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johshoff/find-tempo-rust-backend'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4996c3864a9b009035ee8cae317692147cee5495
[INFO] sha for GitHub repo johshoff/find-tempo-rust-backend: 4996c3864a9b009035ee8cae317692147cee5495
[INFO] validating manifest of johshoff/find-tempo-rust-backend 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 johshoff/find-tempo-rust-backend 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 johshoff/find-tempo-rust-backend
[INFO] finished frobbing johshoff/find-tempo-rust-backend
[INFO] frobbed toml for johshoff/find-tempo-rust-backend written to work/ex/beta-1.38-1/sources/1.37.0/gh/johshoff/find-tempo-rust-backend/Cargo.toml
[INFO] started frobbing johshoff/find-tempo-rust-backend
[INFO] finished frobbing johshoff/find-tempo-rust-backend
[INFO] frobbed toml for johshoff/find-tempo-rust-backend written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johshoff/find-tempo-rust-backend/Cargo.toml
[INFO] crate johshoff/find-tempo-rust-backend 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 johshoff/find-tempo-rust-backend 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/johshoff/find-tempo-rust-backend:/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] 1fe889cc5e6e6ebc34d85748330bead66316e7f073fe183b5798d9506680a6c2
[INFO] running `"docker" "start" "-a" "1fe889cc5e6e6ebc34d85748330bead66316e7f073fe183b5798d9506680a6c2"`
[INFO] [stderr]    Compiling nom v2.0.1
[INFO] [stderr]    Compiling bart v0.0.1
[INFO] [stderr]    Compiling syn v0.10.6
[INFO] [stderr] warning[E0503]: cannot use `separator` because it was mutably borrowed
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bart-0.0.1/src/display_html_safe.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for part in buf.split(|x| { separator = x; (x == '<') || (x == '&') || (x == '\'') || (x == '"') }) {
[INFO] [stderr]    |                     ---------------------------------------------------------------------------------------
[INFO] [stderr]    |                     |         |     |
[INFO] [stderr]    |                     |         |     borrow occurs due to use of `separator` in closure
[INFO] [stderr]    |                     |         borrow of `separator` occurs here
[INFO] [stderr]    |                     borrow later used here
[INFO] [stderr] ...
[INFO] [stderr] 22 |                 '<' => self.inner.write_str("&lt;"),
[INFO] [stderr]    |                 ^^^ use of borrowed `separator`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]    = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling bart_derive v0.0.1
[INFO] [stderr]    Compiling find-tempo-rust-backend v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.69s
[INFO] running `"docker" "inspect" "1fe889cc5e6e6ebc34d85748330bead66316e7f073fe183b5798d9506680a6c2"`
[INFO] running `"docker" "rm" "-f" "1fe889cc5e6e6ebc34d85748330bead66316e7f073fe183b5798d9506680a6c2"`
[INFO] [stdout] 1fe889cc5e6e6ebc34d85748330bead66316e7f073fe183b5798d9506680a6c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/johshoff/find-tempo-rust-backend:/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] 3c4fb284fc317e43fef797aa406a8946e3e92642ba3955800d00ea3b41cb190a
[INFO] running `"docker" "start" "-a" "3c4fb284fc317e43fef797aa406a8946e3e92642ba3955800d00ea3b41cb190a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling find-tempo-rust-backend v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "3c4fb284fc317e43fef797aa406a8946e3e92642ba3955800d00ea3b41cb190a"`
[INFO] running `"docker" "rm" "-f" "3c4fb284fc317e43fef797aa406a8946e3e92642ba3955800d00ea3b41cb190a"`
[INFO] [stdout] 3c4fb284fc317e43fef797aa406a8946e3e92642ba3955800d00ea3b41cb190a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/johshoff/find-tempo-rust-backend:/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] f6f1d7a1f2bb5a037199df0904ae1e1351c3529a9cd84812849757bd2bd79924
[INFO] running `"docker" "start" "-a" "f6f1d7a1f2bb5a037199df0904ae1e1351c3529a9cd84812849757bd2bd79924"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/find_tempo_rust_backend-532abb051e70da25
[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" "f6f1d7a1f2bb5a037199df0904ae1e1351c3529a9cd84812849757bd2bd79924"`
[INFO] running `"docker" "rm" "-f" "f6f1d7a1f2bb5a037199df0904ae1e1351c3529a9cd84812849757bd2bd79924"`
[INFO] [stdout] f6f1d7a1f2bb5a037199df0904ae1e1351c3529a9cd84812849757bd2bd79924