[INFO] updating cached repository k0pernicus/webcrawler-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/k0pernicus/webcrawler-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/k0pernicus/webcrawler-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/k0pernicus/webcrawler-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/k0pernicus/webcrawler-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/k0pernicus/webcrawler-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/k0pernicus/webcrawler-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/k0pernicus/webcrawler-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62f12f5c3e28b317d3049d07aab721531423df8c
[INFO] sha for GitHub repo k0pernicus/webcrawler-rs: 62f12f5c3e28b317d3049d07aab721531423df8c
[INFO] validating manifest of k0pernicus/webcrawler-rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of k0pernicus/webcrawler-rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing k0pernicus/webcrawler-rs
[INFO] finished frobbing k0pernicus/webcrawler-rs
[INFO] frobbed toml for k0pernicus/webcrawler-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/k0pernicus/webcrawler-rs/Cargo.toml
[INFO] started frobbing k0pernicus/webcrawler-rs
[INFO] finished frobbing k0pernicus/webcrawler-rs
[INFO] frobbed toml for k0pernicus/webcrawler-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/k0pernicus/webcrawler-rs/Cargo.toml
[INFO] crate k0pernicus/webcrawler-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/k0pernicus/webcrawler-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing k0pernicus/webcrawler-rs against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/k0pernicus/webcrawler-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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 56de256085ba4086d8c5525c4fc2865a52d80f4ae67236f8930c90c4c8f502aa
[INFO] running `"docker" "start" "-a" "56de256085ba4086d8c5525c4fc2865a52d80f4ae67236f8930c90c4c8f502aa"`
[INFO] [stderr]    Compiling curl-sys v0.1.35
[INFO] [stderr]    Compiling curl v0.2.19
[INFO] [stderr]    Compiling webcrawler-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `url`
[INFO] [stderr]  --> src/href_parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     url : &'a str,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `"docker" "inspect" "56de256085ba4086d8c5525c4fc2865a52d80f4ae67236f8930c90c4c8f502aa"`
[INFO] running `"docker" "rm" "-f" "56de256085ba4086d8c5525c4fc2865a52d80f4ae67236f8930c90c4c8f502aa"`
[INFO] [stdout] 56de256085ba4086d8c5525c4fc2865a52d80f4ae67236f8930c90c4c8f502aa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/k0pernicus/webcrawler-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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6bc1e26b7a3197a5c10f405c91bfe2d283fa75d8031abc2f522f20d7e4af35ec
[INFO] running `"docker" "start" "-a" "6bc1e26b7a3197a5c10f405c91bfe2d283fa75d8031abc2f522f20d7e4af35ec"`
[INFO] [stderr]    Compiling webcrawler-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `url`
[INFO] [stderr]  --> src/href_parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     url : &'a str,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "6bc1e26b7a3197a5c10f405c91bfe2d283fa75d8031abc2f522f20d7e4af35ec"`
[INFO] running `"docker" "rm" "-f" "6bc1e26b7a3197a5c10f405c91bfe2d283fa75d8031abc2f522f20d7e4af35ec"`
[INFO] [stdout] 6bc1e26b7a3197a5c10f405c91bfe2d283fa75d8031abc2f522f20d7e4af35ec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/k0pernicus/webcrawler-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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] bd97d53dba314ddfa6ce597ca16fc9c368b9e30c93aeafc88fa497e25a7cdff1
[INFO] running `"docker" "start" "-a" "bd97d53dba314ddfa6ce597ca16fc9c368b9e30c93aeafc88fa497e25a7cdff1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/webcrawler_rs-9556a3e3edc8fcec
[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" "bd97d53dba314ddfa6ce597ca16fc9c368b9e30c93aeafc88fa497e25a7cdff1"`
[INFO] running `"docker" "rm" "-f" "bd97d53dba314ddfa6ce597ca16fc9c368b9e30c93aeafc88fa497e25a7cdff1"`
[INFO] [stdout] bd97d53dba314ddfa6ce597ca16fc9c368b9e30c93aeafc88fa497e25a7cdff1