[INFO] updating cached repository hone/npmstats.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hone/npmstats.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hone/npmstats.rs" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hone/npmstats.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hone/npmstats.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hone/npmstats.rs" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/hone/npmstats.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/hone/npmstats.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec580096cb0b0377373da23fa3747247a48b8267
[INFO] sha for GitHub repo hone/npmstats.rs: ec580096cb0b0377373da23fa3747247a48b8267
[INFO] validating manifest of hone/npmstats.rs on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hone/npmstats.rs on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hone/npmstats.rs
[INFO] finished frobbing hone/npmstats.rs
[INFO] frobbed toml for hone/npmstats.rs written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hone/npmstats.rs/Cargo.toml
[INFO] started frobbing hone/npmstats.rs
[INFO] finished frobbing hone/npmstats.rs
[INFO] frobbed toml for hone/npmstats.rs written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/hone/npmstats.rs/Cargo.toml
[INFO] crate hone/npmstats.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hone/npmstats.rs against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hone/npmstats.rs:/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 50b25b243b3577396a92ce1a56fbfe34c4c6ce722e5a3649a9d1ca5cc74b9496
[INFO] running `"docker" "start" "-a" "50b25b243b3577396a92ce1a56fbfe34c4c6ce722e5a3649a9d1ca5cc74b9496"`
[INFO] [stderr]     Checking gnuplot v0.0.22
[INFO] [stderr]     Checking serde_urlencoded v0.5.1
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking reqwest v0.7.3
[INFO] [stderr]     Checking npmstats v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |             let mut axes2d = fg.axes2d()
[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/main.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |             let mut axes2d = fg.axes2d()
[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/npm_registry.rs:52:29
[INFO] [stderr]    |
[INFO] [stderr] 52 |                         let mut entry = downloads.entry(module).or_insert(Vec::new());
[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/npm_registry.rs:52:29
[INFO] [stderr]    |
[INFO] [stderr] 52 |                         let mut entry = downloads.entry(module).or_insert(Vec::new());
[INFO] [stderr]    |                             ----^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `"docker" "inspect" "50b25b243b3577396a92ce1a56fbfe34c4c6ce722e5a3649a9d1ca5cc74b9496"`
[INFO] running `"docker" "rm" "-f" "50b25b243b3577396a92ce1a56fbfe34c4c6ce722e5a3649a9d1ca5cc74b9496"`
[INFO] [stdout] 50b25b243b3577396a92ce1a56fbfe34c4c6ce722e5a3649a9d1ca5cc74b9496