[INFO] updating cached repository sd-rust/sprep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sd-rust/sprep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sd-rust/sprep" "work/ex/beta-1.38-1/sources/1.37.0/gh/sd-rust/sprep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sd-rust/sprep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sd-rust/sprep" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sd-rust/sprep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sd-rust/sprep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d59c9d7980c517ad3f7e6758a0f6a2657336bdb5
[INFO] sha for GitHub repo sd-rust/sprep: d59c9d7980c517ad3f7e6758a0f6a2657336bdb5
[INFO] validating manifest of sd-rust/sprep 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 sd-rust/sprep 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 sd-rust/sprep
[INFO] finished frobbing sd-rust/sprep
[INFO] frobbed toml for sd-rust/sprep written to work/ex/beta-1.38-1/sources/1.37.0/gh/sd-rust/sprep/Cargo.toml
[INFO] started frobbing sd-rust/sprep
[INFO] finished frobbing sd-rust/sprep
[INFO] frobbed toml for sd-rust/sprep written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sd-rust/sprep/Cargo.toml
[INFO] crate sd-rust/sprep 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 sd-rust/sprep 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-2/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/sd-rust/sprep:/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] cf49c7fc2a0e266b7feff95478715a71ab73147de240ecd00f12117c8be20e03
[INFO] running `"docker" "start" "-a" "cf49c7fc2a0e266b7feff95478715a71ab73147de240ecd00f12117c8be20e03"`
[INFO] [stderr]    Compiling reexport-proc-macro v1.0.5
[INFO] [stderr]    Compiling enumset v0.3.10
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling chan v0.1.21
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling serde_yaml v0.7.5
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling enum-map-derive v0.2.10
[INFO] [stderr]    Compiling chan-signal v0.3.1
[INFO] [stderr]    Compiling enum-map v0.2.36
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling cursive v0.8.2
[INFO] [stderr]    Compiling spaced_learner v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `load_file`
[INFO] [stderr]   --> src/model.rs:47:1
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn load_file(file_name: &str) -> Vec<QAndA>{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.92s
[INFO] running `"docker" "inspect" "cf49c7fc2a0e266b7feff95478715a71ab73147de240ecd00f12117c8be20e03"`
[INFO] running `"docker" "rm" "-f" "cf49c7fc2a0e266b7feff95478715a71ab73147de240ecd00f12117c8be20e03"`
[INFO] [stdout] cf49c7fc2a0e266b7feff95478715a71ab73147de240ecd00f12117c8be20e03
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/sd-rust/sprep:/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] b2996aaf548c99d1fb669389cbb21abfbba7f0c673ca3e68abe37acc9b55baaf
[INFO] running `"docker" "start" "-a" "b2996aaf548c99d1fb669389cbb21abfbba7f0c673ca3e68abe37acc9b55baaf"`
[INFO] [stderr]    Compiling spaced_learner v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `load_file`
[INFO] [stderr]   --> src/model.rs:47:1
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn load_file(file_name: &str) -> Vec<QAndA>{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `"docker" "inspect" "b2996aaf548c99d1fb669389cbb21abfbba7f0c673ca3e68abe37acc9b55baaf"`
[INFO] running `"docker" "rm" "-f" "b2996aaf548c99d1fb669389cbb21abfbba7f0c673ca3e68abe37acc9b55baaf"`
[INFO] [stdout] b2996aaf548c99d1fb669389cbb21abfbba7f0c673ca3e68abe37acc9b55baaf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/sd-rust/sprep:/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] 6a91079ea64b76bddbbdb9d521f49672ceb770ff3d2dafff6b29f451c0e822d4
[INFO] running `"docker" "start" "-a" "6a91079ea64b76bddbbdb9d521f49672ceb770ff3d2dafff6b29f451c0e822d4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/spaced_learner-342331ca2fc31ce9
[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" "6a91079ea64b76bddbbdb9d521f49672ceb770ff3d2dafff6b29f451c0e822d4"`
[INFO] running `"docker" "rm" "-f" "6a91079ea64b76bddbbdb9d521f49672ceb770ff3d2dafff6b29f451c0e822d4"`
[INFO] [stdout] 6a91079ea64b76bddbbdb9d521f49672ceb770ff3d2dafff6b29f451c0e822d4