[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/beta-1.38-1/sources/1.37.0/gh/hone/npmstats.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hone/npmstats.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hone/npmstats.rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hone/npmstats.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 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 hone/npmstats.rs 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 hone/npmstats.rs
[INFO] finished frobbing hone/npmstats.rs
[INFO] frobbed toml for hone/npmstats.rs written to work/ex/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/hone/npmstats.rs/Cargo.toml
[INFO] crate hone/npmstats.rs 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 hone/npmstats.rs 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hone/npmstats.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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f4e18d22069baeaef96f87da65a7e549eaabb60364b60be5b67388543398a9ff
[INFO] running `"docker" "start" "-a" "f4e18d22069baeaef96f87da65a7e549eaabb60364b60be5b67388543398a9ff"`
[INFO] [stderr]    Compiling cc v1.0.0
[INFO] [stderr]    Compiling openssl v0.9.19
[INFO] [stderr]    Compiling gnuplot v0.0.22
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.3
[INFO] [stderr]    Compiling libflate v0.1.11
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling futures-cpupool v0.1.6
[INFO] [stderr]    Compiling mio v0.6.10
[INFO] [stderr]    Compiling tokio-io v0.1.3
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling serde_urlencoded v0.5.1
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling mime v0.3.4
[INFO] [stderr]    Compiling openssl-sys v0.9.19
[INFO] [stderr]    Compiling tokio-core v0.1.9
[INFO] [stderr]    Compiling serde_derive v1.0.15
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling docopt v0.8.1
[INFO] [stderr]    Compiling native-tls v0.1.4
[INFO] [stderr]    Compiling hyper v0.11.2
[INFO] [stderr]    Compiling tokio-tls v0.1.3
[INFO] [stderr]    Compiling hyper-tls v0.1.2
[INFO] [stderr]    Compiling reqwest v0.7.3
[INFO] [stderr]    Compiling 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/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 1m 11s
[INFO] running `"docker" "inspect" "f4e18d22069baeaef96f87da65a7e549eaabb60364b60be5b67388543398a9ff"`
[INFO] running `"docker" "rm" "-f" "f4e18d22069baeaef96f87da65a7e549eaabb60364b60be5b67388543398a9ff"`
[INFO] [stdout] f4e18d22069baeaef96f87da65a7e549eaabb60364b60be5b67388543398a9ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hone/npmstats.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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 634639ffd8c5f55b4918ea950ebca0be8eb38513e8fe225771e8abed50def963
[INFO] running `"docker" "start" "-a" "634639ffd8c5f55b4918ea950ebca0be8eb38513e8fe225771e8abed50def963"`
[INFO] [stderr]    Compiling 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/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 1.27s
[INFO] running `"docker" "inspect" "634639ffd8c5f55b4918ea950ebca0be8eb38513e8fe225771e8abed50def963"`
[INFO] running `"docker" "rm" "-f" "634639ffd8c5f55b4918ea950ebca0be8eb38513e8fe225771e8abed50def963"`
[INFO] [stdout] 634639ffd8c5f55b4918ea950ebca0be8eb38513e8fe225771e8abed50def963
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hone/npmstats.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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 95f8e371ce62ba8b5e743b31c2f39bab275bbd7ec15a24941a31626654587857
[INFO] running `"docker" "start" "-a" "95f8e371ce62ba8b5e743b31c2f39bab275bbd7ec15a24941a31626654587857"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/npmstats-17559e9edf4c452f
[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" "95f8e371ce62ba8b5e743b31c2f39bab275bbd7ec15a24941a31626654587857"`
[INFO] running `"docker" "rm" "-f" "95f8e371ce62ba8b5e743b31c2f39bab275bbd7ec15a24941a31626654587857"`
[INFO] [stdout] 95f8e371ce62ba8b5e743b31c2f39bab275bbd7ec15a24941a31626654587857