[INFO] updating cached repository jeremyletang/trueskill-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jeremyletang/trueskill-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jeremyletang/trueskill-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jeremyletang/trueskill-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jeremyletang/trueskill-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jeremyletang/trueskill-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9ef44f2c5695636836303c7cb1fdede1ac7804cd
[INFO] sha for GitHub repo jeremyletang/trueskill-rs: 9ef44f2c5695636836303c7cb1fdede1ac7804cd
[INFO] validating manifest of jeremyletang/trueskill-rs 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 jeremyletang/trueskill-rs 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 jeremyletang/trueskill-rs
[INFO] finished frobbing jeremyletang/trueskill-rs
[INFO] frobbed toml for jeremyletang/trueskill-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs/Cargo.toml
[INFO] started frobbing jeremyletang/trueskill-rs
[INFO] finished frobbing jeremyletang/trueskill-rs
[INFO] frobbed toml for jeremyletang/trueskill-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jeremyletang/trueskill-rs/Cargo.toml
[INFO] crate jeremyletang/trueskill-rs 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] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 jeremyletang/trueskill-rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 11f4cab3fba81332ff3f68fc9f94fb82f3ed2e6045948ab01adb51d6afb1efd2
[INFO] running `"docker" "start" "-a" "11f4cab3fba81332ff3f68fc9f94fb82f3ed2e6045948ab01adb51d6afb1efd2"`
[INFO] [stderr]    Compiling trueskill v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `complementary_error`
[INFO] [stderr]  --> src/math.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn complementary_error<F: Float + One + Zero>(x: F) -> F {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cumulative_distribution`
[INFO] [stderr]   --> src/math.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn cumulative_distribution<F: Float + One + Zero>(x: F, mu: Option<F>, sigma: Option<F>) -> F {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `probability_density`
[INFO] [stderr]   --> src/math.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn probability_density<F: Float + One + Zero>(x: F, mu: Option<F>, sigma: Option<F>) -> F {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `complementary_error_inv`
[INFO] [stderr]   --> src/math.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn complementary_error_inv<F: Float + One + Zero>(mut y: F) -> F {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cumulative_distribution_inv`
[INFO] [stderr]   --> src/math.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn cumulative_distribution_inv<F: Float + One + Zero>(x: F, mu: Option<F>, sigma: Option<F>) -> F {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "11f4cab3fba81332ff3f68fc9f94fb82f3ed2e6045948ab01adb51d6afb1efd2"`
[INFO] running `"docker" "rm" "-f" "11f4cab3fba81332ff3f68fc9f94fb82f3ed2e6045948ab01adb51d6afb1efd2"`
[INFO] [stdout] 11f4cab3fba81332ff3f68fc9f94fb82f3ed2e6045948ab01adb51d6afb1efd2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 02e0f4aa000631c9fabc2fe9323f761919a1bc3bc7f6685d926a89640791a3a8
[INFO] running `"docker" "start" "-a" "02e0f4aa000631c9fabc2fe9323f761919a1bc3bc7f6685d926a89640791a3a8"`
[INFO] [stderr]    Compiling trueskill v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `complementary_error_inv`
[INFO] [stderr]   --> src/math.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn complementary_error_inv<F: Float + One + Zero>(mut y: F) -> F {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cumulative_distribution_inv`
[INFO] [stderr]   --> src/math.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn cumulative_distribution_inv<F: Float + One + Zero>(x: F, mu: Option<F>, sigma: Option<F>) -> F {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "02e0f4aa000631c9fabc2fe9323f761919a1bc3bc7f6685d926a89640791a3a8"`
[INFO] running `"docker" "rm" "-f" "02e0f4aa000631c9fabc2fe9323f761919a1bc3bc7f6685d926a89640791a3a8"`
[INFO] [stdout] 02e0f4aa000631c9fabc2fe9323f761919a1bc3bc7f6685d926a89640791a3a8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jeremyletang/trueskill-rs:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 4c21a03a57644f786d2d596eb87a8d439c610fa80852802603d26c221af1901f
[INFO] running `"docker" "start" "-a" "4c21a03a57644f786d2d596eb87a8d439c610fa80852802603d26c221af1901f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/trueskill-7f1fc0d4c1b77ea8
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test math::with_f32 ... ok
[INFO] [stdout] test math::with_f64 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trueskill
[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" "4c21a03a57644f786d2d596eb87a8d439c610fa80852802603d26c221af1901f"`
[INFO] running `"docker" "rm" "-f" "4c21a03a57644f786d2d596eb87a8d439c610fa80852802603d26c221af1901f"`
[INFO] [stdout] 4c21a03a57644f786d2d596eb87a8d439c610fa80852802603d26c221af1901f