[INFO] updating cached repository northbear/rustlk
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/northbear/rustlk
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/northbear/rustlk" "work/ex/beta-1.38-1/sources/1.37.0/gh/northbear/rustlk"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/northbear/rustlk'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/northbear/rustlk" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/northbear/rustlk"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/northbear/rustlk'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3669cdb281ac6b131f35a3c653295edebc4922b9
[INFO] sha for GitHub repo northbear/rustlk: 3669cdb281ac6b131f35a3c653295edebc4922b9
[INFO] validating manifest of northbear/rustlk 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 northbear/rustlk 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 northbear/rustlk
[INFO] finished frobbing northbear/rustlk
[INFO] frobbed toml for northbear/rustlk written to work/ex/beta-1.38-1/sources/1.37.0/gh/northbear/rustlk/Cargo.toml
[INFO] started frobbing northbear/rustlk
[INFO] finished frobbing northbear/rustlk
[INFO] frobbed toml for northbear/rustlk written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/northbear/rustlk/Cargo.toml
[INFO] crate northbear/rustlk 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing northbear/rustlk 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/northbear/rustlk:/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] f6bc7752f1e3f933fbb5016a6290ee65613c3659de880d27890dd793d7da76b7
[INFO] running `"docker" "start" "-a" "f6bc7752f1e3f933fbb5016a6290ee65613c3659de880d27890dd793d7da76b7"`
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling ctrlc v3.1.1
[INFO] [stderr]    Compiling rustlk v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `ConfError`
[INFO] [stderr]   --> src/config.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct ConfError(pub String);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.49s
[INFO] running `"docker" "inspect" "f6bc7752f1e3f933fbb5016a6290ee65613c3659de880d27890dd793d7da76b7"`
[INFO] running `"docker" "rm" "-f" "f6bc7752f1e3f933fbb5016a6290ee65613c3659de880d27890dd793d7da76b7"`
[INFO] [stdout] f6bc7752f1e3f933fbb5016a6290ee65613c3659de880d27890dd793d7da76b7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/northbear/rustlk:/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] 2da8f16348644047843ff5f615ecbe5d4cd38fc4b1f162416702440257ffe2ad
[INFO] running `"docker" "start" "-a" "2da8f16348644047843ff5f615ecbe5d4cd38fc4b1f162416702440257ffe2ad"`
[INFO] [stderr]    Compiling rustlk v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `ConfError`
[INFO] [stderr]   --> src/config.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct ConfError(pub String);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "2da8f16348644047843ff5f615ecbe5d4cd38fc4b1f162416702440257ffe2ad"`
[INFO] running `"docker" "rm" "-f" "2da8f16348644047843ff5f615ecbe5d4cd38fc4b1f162416702440257ffe2ad"`
[INFO] [stdout] 2da8f16348644047843ff5f615ecbe5d4cd38fc4b1f162416702440257ffe2ad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/northbear/rustlk:/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] 20d03ebbc61dd8744ead44cd0483db2854d33e779b5ed30f67a01207dd3b9e0b
[INFO] running `"docker" "start" "-a" "20d03ebbc61dd8744ead44cd0483db2854d33e779b5ed30f67a01207dd3b9e0b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustlk-3ff308a497674092
[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" "20d03ebbc61dd8744ead44cd0483db2854d33e779b5ed30f67a01207dd3b9e0b"`
[INFO] running `"docker" "rm" "-f" "20d03ebbc61dd8744ead44cd0483db2854d33e779b5ed30f67a01207dd3b9e0b"`
[INFO] [stdout] 20d03ebbc61dd8744ead44cd0483db2854d33e779b5ed30f67a01207dd3b9e0b