[INFO] updating cached repository tumbl3w33d/interface_scraper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tumbl3w33d/interface_scraper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tumbl3w33d/interface_scraper" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tumbl3w33d/interface_scraper"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tumbl3w33d/interface_scraper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tumbl3w33d/interface_scraper" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tumbl3w33d/interface_scraper"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tumbl3w33d/interface_scraper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 144a4a2ede54b6908007107bae78cafe0bccc4ec
[INFO] sha for GitHub repo tumbl3w33d/interface_scraper: 144a4a2ede54b6908007107bae78cafe0bccc4ec
[INFO] validating manifest of tumbl3w33d/interface_scraper on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tumbl3w33d/interface_scraper on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tumbl3w33d/interface_scraper
[INFO] finished frobbing tumbl3w33d/interface_scraper
[INFO] frobbed toml for tumbl3w33d/interface_scraper written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/tumbl3w33d/interface_scraper/Cargo.toml
[INFO] started frobbing tumbl3w33d/interface_scraper
[INFO] finished frobbing tumbl3w33d/interface_scraper
[INFO] frobbed toml for tumbl3w33d/interface_scraper written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tumbl3w33d/interface_scraper/Cargo.toml
[INFO] crate tumbl3w33d/interface_scraper already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tumbl3w33d/interface_scraper against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-5/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/tumbl3w33d/interface_scraper:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b12b4788679deb06d76f81d80252467887f6940927efe2edfe3b088c6cbc548b
[INFO] running `"docker" "start" "-a" "b12b4788679deb06d76f81d80252467887f6940927efe2edfe3b088c6cbc548b"`
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking regex v1.0.1
[INFO] [stderr]    Compiling getset v0.0.6
[INFO] [stderr]     Checking interface_scraper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ifconfig.rs:31:21
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 let mut flagged_wan_iface = wan_iface.as_wan_interface().with_gateway(gateway);
[INFO] [stderr]    |                     ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ifconfig.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 let mut ifaces_with_wan = ifaces_without_wan;
[INFO] [stderr]    |                     ----^^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ifconfig.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut octets: Vec<u8> = captures["gateway"].split(r".").map(|x| x.parse().unwrap()).collect();
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ifconfig.rs:31:21
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 let mut flagged_wan_iface = wan_iface.as_wan_interface().with_gateway(gateway);
[INFO] [stderr]    |                     ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ifconfig.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 let mut ifaces_with_wan = ifaces_without_wan;
[INFO] [stderr]    |                     ----^^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ifconfig.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut octets: Vec<u8> = captures["gateway"].split(r".").map(|x| x.parse().unwrap()).collect();
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.47s
[INFO] running `"docker" "inspect" "b12b4788679deb06d76f81d80252467887f6940927efe2edfe3b088c6cbc548b"`
[INFO] running `"docker" "rm" "-f" "b12b4788679deb06d76f81d80252467887f6940927efe2edfe3b088c6cbc548b"`
[INFO] [stdout] b12b4788679deb06d76f81d80252467887f6940927efe2edfe3b088c6cbc548b