[INFO] updating cached repository https://github.com/RCasatta/integer-compression
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ef37ff31167fa2e80379319c5dcf9e26b7b5d235
[INFO] testing RCasatta/integer-compression against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FRCasatta%2Finteger-compression" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RCasatta/integer-compression on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/RCasatta/integer-compression
[INFO] finished tweaking git repo https://github.com/RCasatta/integer-compression
[INFO] tweaked toml for git repo https://github.com/RCasatta/integer-compression written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/RCasatta/integer-compression already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 0c172f1b456936c05b6d48ff6c0a8b86b2d5d1fb1b8e754f7162d7d6ec4efbf7
[INFO] running `"docker" "start" "-a" "0c172f1b456936c05b6d48ff6c0a8b86b2d5d1fb1b8e754f7162d7d6ec4efbf7"`
[INFO] [stderr]    Compiling arrayref v0.3.4
[INFO] [stderr]    Compiling data-encoding v2.1.1
[INFO] [stderr]    Compiling digest v0.7.2
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling integer-compression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `init_U40_random_vec` should have a snake case name
[INFO] [stderr]    --> src/main.rs:171:4
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn init_U40_random_vec(n : usize) -> Vec<U40>{
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `init_u40_random_vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `"docker" "inspect" "0c172f1b456936c05b6d48ff6c0a8b86b2d5d1fb1b8e754f7162d7d6ec4efbf7"`
[INFO] running `"docker" "rm" "-f" "0c172f1b456936c05b6d48ff6c0a8b86b2d5d1fb1b8e754f7162d7d6ec4efbf7"`
[INFO] [stdout] 0c172f1b456936c05b6d48ff6c0a8b86b2d5d1fb1b8e754f7162d7d6ec4efbf7
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] f7ba3f2f3f0a99ba236e4f8385c25d511c561ba12ec6db6ab755ba544f811f71
[INFO] running `"docker" "start" "-a" "f7ba3f2f3f0a99ba236e4f8385c25d511c561ba12ec6db6ab755ba544f811f71"`
[INFO] [stderr]    Compiling integer-compression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]   --> examples/utxo.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut buffer = String::new();
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_buffer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/utxo.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut buffer = String::new();
[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: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `init_U40_random_vec` should have a snake case name
[INFO] [stderr]    --> src/main.rs:171:4
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn init_U40_random_vec(n : usize) -> Vec<U40>{
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `init_u40_random_vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_U40` should have a snake case name
[INFO] [stderr]    --> src/main.rs:189:8
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn test_U40() {
[INFO] [stderr]     |        ^^^^^^^^ help: convert the identifier to snake case: `test_u40`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "f7ba3f2f3f0a99ba236e4f8385c25d511c561ba12ec6db6ab755ba544f811f71"`
[INFO] running `"docker" "rm" "-f" "f7ba3f2f3f0a99ba236e4f8385c25d511c561ba12ec6db6ab755ba544f811f71"`
[INFO] [stdout] f7ba3f2f3f0a99ba236e4f8385c25d511c561ba12ec6db6ab755ba544f811f71
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] e73dbb0b1bcfc86aff7c71211a902a3a2693a810da2b461d8dd74573fa47cb90
[INFO] running `"docker" "start" "-a" "e73dbb0b1bcfc86aff7c71211a902a3a2693a810da2b461d8dd74573fa47cb90"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/integer_compression-e33a9cc0d4594939
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_U40 ... 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" "e73dbb0b1bcfc86aff7c71211a902a3a2693a810da2b461d8dd74573fa47cb90"`
[INFO] running `"docker" "rm" "-f" "e73dbb0b1bcfc86aff7c71211a902a3a2693a810da2b461d8dd74573fa47cb90"`
[INFO] [stdout] e73dbb0b1bcfc86aff7c71211a902a3a2693a810da2b461d8dd74573fa47cb90