[INFO] updating cached repository mexus/k-nucleotide-experiments
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mexus/k-nucleotide-experiments
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mexus/k-nucleotide-experiments" "work/ex/beta-1.37-6/sources/1.36.0/gh/mexus/k-nucleotide-experiments"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mexus/k-nucleotide-experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mexus/k-nucleotide-experiments" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mexus/k-nucleotide-experiments"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mexus/k-nucleotide-experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c37f2eee2e698c96bc8ccf1a72cfa358a5be3731
[INFO] sha for GitHub repo mexus/k-nucleotide-experiments: c37f2eee2e698c96bc8ccf1a72cfa358a5be3731
[INFO] validating manifest of mexus/k-nucleotide-experiments on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mexus/k-nucleotide-experiments on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mexus/k-nucleotide-experiments
[INFO] finished frobbing mexus/k-nucleotide-experiments
[INFO] frobbed toml for mexus/k-nucleotide-experiments written to work/ex/beta-1.37-6/sources/1.36.0/gh/mexus/k-nucleotide-experiments/Cargo.toml
[INFO] started frobbing mexus/k-nucleotide-experiments
[INFO] finished frobbing mexus/k-nucleotide-experiments
[INFO] frobbed toml for mexus/k-nucleotide-experiments written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mexus/k-nucleotide-experiments/Cargo.toml
[INFO] crate mexus/k-nucleotide-experiments already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing mexus/k-nucleotide-experiments against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mexus/k-nucleotide-experiments:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 777b575ac369ccf4754843250f2b518e91030473c5942cc847387c78413b2edb
[INFO] running `"docker" "start" "-a" "777b575ac369ccf4754843250f2b518e91030473c5942cc847387c78413b2edb"`
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.0
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling tokio-threadpool v0.1.9
[INFO] [stderr]    Compiling rust-4 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.44s
[INFO] running `"docker" "inspect" "777b575ac369ccf4754843250f2b518e91030473c5942cc847387c78413b2edb"`
[INFO] running `"docker" "rm" "-f" "777b575ac369ccf4754843250f2b518e91030473c5942cc847387c78413b2edb"`
[INFO] [stdout] 777b575ac369ccf4754843250f2b518e91030473c5942cc847387c78413b2edb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mexus/k-nucleotide-experiments:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8b55a5d9ca96357e0ae1a31f30f4c4af688e0cc1a3012210fb90abac3b943322
[INFO] running `"docker" "start" "-a" "8b55a5d9ca96357e0ae1a31f30f4c4af688e0cc1a3012210fb90abac3b943322"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling criterion-plot v0.2.5
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling criterion-stats v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling handlebars v0.32.4
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling criterion v0.2.5
[INFO] [stderr]    Compiling rust-4 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.15s
[INFO] running `"docker" "inspect" "8b55a5d9ca96357e0ae1a31f30f4c4af688e0cc1a3012210fb90abac3b943322"`
[INFO] running `"docker" "rm" "-f" "8b55a5d9ca96357e0ae1a31f30f4c4af688e0cc1a3012210fb90abac3b943322"`
[INFO] [stdout] 8b55a5d9ca96357e0ae1a31f30f4c4af688e0cc1a3012210fb90abac3b943322
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mexus/k-nucleotide-experiments:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 9bcc30c38b6128ad5c52972e2c64bc3cfc7c13acd51911d43a84e477845a8b2a
[INFO] running `"docker" "start" "-a" "9bcc30c38b6128ad5c52972e2c64bc3cfc7c13acd51911d43a84e477845a8b2a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_4-3486d1d3f2344241
[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/rust_4-c4dbfc345aee0699
[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]    Doc-tests rust-4
[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" "9bcc30c38b6128ad5c52972e2c64bc3cfc7c13acd51911d43a84e477845a8b2a"`
[INFO] running `"docker" "rm" "-f" "9bcc30c38b6128ad5c52972e2c64bc3cfc7c13acd51911d43a84e477845a8b2a"`
[INFO] [stdout] 9bcc30c38b6128ad5c52972e2c64bc3cfc7c13acd51911d43a84e477845a8b2a