[INFO] updating cached repository kwyse/muse
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kwyse/muse
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kwyse/muse" "work/ex/beta-1.38-1/sources/1.37.0/gh/kwyse/muse"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kwyse/muse'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kwyse/muse" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kwyse/muse"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kwyse/muse'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6796766a024540696c69d5a74614f6a035c07eaa
[INFO] sha for GitHub repo kwyse/muse: 6796766a024540696c69d5a74614f6a035c07eaa
[INFO] validating manifest of kwyse/muse 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 kwyse/muse 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 kwyse/muse
[INFO] finished frobbing kwyse/muse
[INFO] frobbed toml for kwyse/muse written to work/ex/beta-1.38-1/sources/1.37.0/gh/kwyse/muse/Cargo.toml
[INFO] started frobbing kwyse/muse
[INFO] finished frobbing kwyse/muse
[INFO] frobbed toml for kwyse/muse written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kwyse/muse/Cargo.toml
[INFO] crate kwyse/muse 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kwyse/muse 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-1/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/kwyse/muse:/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] 4968194933af38193be77d97f8723e8d80c0c1a1ad44184bb88ebf54f68b5154
[INFO] running `"docker" "start" "-a" "4968194933af38193be77d97f8723e8d80c0c1a1ad44184bb88ebf54f68b5154"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling muse v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/weight.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/weight.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/weight.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     fn insert(&mut self, entry: WeightLogEntry) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:17
[INFO] [stderr]    |
[INFO] [stderr] 29 |                 write!(stream, "Latest weight recorded: {}kg\t\t({})\n", last.weight(), last.timestamp());
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:42:25
[INFO] [stderr]    |
[INFO] [stderr] 42 |                         write!(stream, "Trending weight: {}kg\t\t\t(trending {})\n", last.weight(), trend);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.51s
[INFO] running `"docker" "inspect" "4968194933af38193be77d97f8723e8d80c0c1a1ad44184bb88ebf54f68b5154"`
[INFO] running `"docker" "rm" "-f" "4968194933af38193be77d97f8723e8d80c0c1a1ad44184bb88ebf54f68b5154"`
[INFO] [stdout] 4968194933af38193be77d97f8723e8d80c0c1a1ad44184bb88ebf54f68b5154
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/kwyse/muse:/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] 422a774da54c2919f10f2d1e0bd48534752267e72d923b8252405a0fff89420a
[INFO] running `"docker" "start" "-a" "422a774da54c2919f10f2d1e0bd48534752267e72d923b8252405a0fff89420a"`
[INFO] [stderr]    Compiling muse v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:17
[INFO] [stderr]    |
[INFO] [stderr] 29 |                 write!(stream, "Latest weight recorded: {}kg\t\t({})\n", last.weight(), last.timestamp());
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:42:25
[INFO] [stderr]    |
[INFO] [stderr] 42 |                         write!(stream, "Trending weight: {}kg\t\t\t(trending {})\n", last.weight(), trend);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "422a774da54c2919f10f2d1e0bd48534752267e72d923b8252405a0fff89420a"`
[INFO] running `"docker" "rm" "-f" "422a774da54c2919f10f2d1e0bd48534752267e72d923b8252405a0fff89420a"`
[INFO] [stdout] 422a774da54c2919f10f2d1e0bd48534752267e72d923b8252405a0fff89420a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/kwyse/muse:/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] 91267a5ec27c0d313e9056d4540da03e7a9f9114b7a831417ab61d5cb1b1c9be
[INFO] running `"docker" "start" "-a" "91267a5ec27c0d313e9056d4540da03e7a9f9114b7a831417ab61d5cb1b1c9be"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/muse-ccf67e6b432299c5
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test weight::tests::weight_log_can_be_construct_with_valid_csv ... ok
[INFO] [stdout] test weight::tests::weight_log_entries_are_inserted_in_ascending_date_order ... ok
[INFO] [stdout] test weight::tests::weight_log_cannot_be_constructed_with_csv_missing_header_fields ... ok
[INFO] [stdout] test weight::tests::weight_log_calculates_the_moving_average ... ok
[INFO] [stdout] test weight::tests::weight_log_cannot_be_constructed_with_invalid_timestamp_values ... ok
[INFO] [stdout] test weight::tests::weight_log_can_be_constructed_empty ... ok
[INFO] [stdout] test weight::tests::weight_log_entries_can_be_inserted ... ok
[INFO] [stdout] test weight::tests::weight_log_cannot_be_constructed_with_invalid_weight_values ... ok
[INFO] [stdout] test weight::tests::weight_log_entries_can_be_constructed_with_just_weight ... ok
[INFO] [stdout] test weight::tests::weight_log_entries_can_be_constructed_with_weight_and_timestamp ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "91267a5ec27c0d313e9056d4540da03e7a9f9114b7a831417ab61d5cb1b1c9be"`
[INFO] running `"docker" "rm" "-f" "91267a5ec27c0d313e9056d4540da03e7a9f9114b7a831417ab61d5cb1b1c9be"`
[INFO] [stdout] 91267a5ec27c0d313e9056d4540da03e7a9f9114b7a831417ab61d5cb1b1c9be