[INFO] updating cached repository santifa/rs-examples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/santifa/rs-examples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/santifa/rs-examples" "work/ex/beta-1.38-1/sources/1.37.0/gh/santifa/rs-examples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/santifa/rs-examples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/santifa/rs-examples" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/santifa/rs-examples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/santifa/rs-examples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce37b7f73eec596b5d70dc29cdaa7ed172891db0
[INFO] sha for GitHub repo santifa/rs-examples: ce37b7f73eec596b5d70dc29cdaa7ed172891db0
[INFO] validating manifest of santifa/rs-examples 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 santifa/rs-examples 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 santifa/rs-examples
[INFO] finished frobbing santifa/rs-examples
[INFO] frobbed toml for santifa/rs-examples written to work/ex/beta-1.38-1/sources/1.37.0/gh/santifa/rs-examples/Cargo.toml
[INFO] started frobbing santifa/rs-examples
[INFO] finished frobbing santifa/rs-examples
[INFO] frobbed toml for santifa/rs-examples written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/santifa/rs-examples/Cargo.toml
[INFO] crate santifa/rs-examples 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 santifa/rs-examples against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/santifa/rs-examples:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5f6ad1181393ea19ae2f8ed9b9b14cd1b0f7094faff4fa9fcd05c47f49544889
[INFO] running `"docker" "start" "-a" "5f6ad1181393ea19ae2f8ed9b9b14cd1b0f7094faff4fa9fcd05c47f49544889"`
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling rs-examples v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/bayes.rs:96:21
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 let mut mean = filtered
[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/bin/bayes.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 let mut variance = filtered.iter().fold(0., |acc, &x| {
[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/bin/fb.rs:241:21
[INFO] [stderr]     |
[INFO] [stderr] 241 |                 let mut glyph = &glyphs[time_bytes[s] as usize]; // use char code to index glyph
[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]     Finished dev [unoptimized + debuginfo] target(s) in 8.17s
[INFO] running `"docker" "inspect" "5f6ad1181393ea19ae2f8ed9b9b14cd1b0f7094faff4fa9fcd05c47f49544889"`
[INFO] running `"docker" "rm" "-f" "5f6ad1181393ea19ae2f8ed9b9b14cd1b0f7094faff4fa9fcd05c47f49544889"`
[INFO] [stdout] 5f6ad1181393ea19ae2f8ed9b9b14cd1b0f7094faff4fa9fcd05c47f49544889
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/santifa/rs-examples:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] a6ada335877d8ad3bffe0dedcd2e9376a94f25f8135617b4c32190eba2283842
[INFO] running `"docker" "start" "-a" "a6ada335877d8ad3bffe0dedcd2e9376a94f25f8135617b4c32190eba2283842"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rs-examples v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/bayes.rs:96:21
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 let mut mean = filtered
[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/bin/bayes.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 let mut variance = filtered.iter().fold(0., |acc, &x| {
[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/bin/fb.rs:241:21
[INFO] [stderr]     |
[INFO] [stderr] 241 |                 let mut glyph = &glyphs[time_bytes[s] as usize]; // use char code to index glyph
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `"docker" "inspect" "a6ada335877d8ad3bffe0dedcd2e9376a94f25f8135617b4c32190eba2283842"`
[INFO] running `"docker" "rm" "-f" "a6ada335877d8ad3bffe0dedcd2e9376a94f25f8135617b4c32190eba2283842"`
[INFO] [stdout] a6ada335877d8ad3bffe0dedcd2e9376a94f25f8135617b4c32190eba2283842
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/santifa/rs-examples:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 7990eaed2890e6cd1f7238533388142d10631b36fa63399ab86ea5fcd2fe8c36
[INFO] running `"docker" "start" "-a" "7990eaed2890e6cd1f7238533388142d10631b36fa63399ab86ea5fcd2fe8c36"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bayes-522bdc683fd99d92
[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] [stderr]      Running /opt/crater/target/debug/deps/fb-5a09498e10b39396
[INFO] [stderr]      Running /opt/crater/target/debug/deps/type-3cad69a09b108e9b
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::valid_judgement ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7990eaed2890e6cd1f7238533388142d10631b36fa63399ab86ea5fcd2fe8c36"`
[INFO] running `"docker" "rm" "-f" "7990eaed2890e6cd1f7238533388142d10631b36fa63399ab86ea5fcd2fe8c36"`
[INFO] [stdout] 7990eaed2890e6cd1f7238533388142d10631b36fa63399ab86ea5fcd2fe8c36