[INFO] updating cached repository bielr/biotrees-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bielr/biotrees-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bielr/biotrees-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/bielr/biotrees-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/bielr/biotrees-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bielr/biotrees-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bielr/biotrees-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bielr/biotrees-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f832804f9a4d4dc24e1c165cf0362387a4115d60
[INFO] sha for GitHub repo bielr/biotrees-rs: f832804f9a4d4dc24e1c165cf0362387a4115d60
[INFO] validating manifest of bielr/biotrees-rs 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 bielr/biotrees-rs 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 bielr/biotrees-rs
[INFO] finished frobbing bielr/biotrees-rs
[INFO] frobbed toml for bielr/biotrees-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/bielr/biotrees-rs/Cargo.toml
[INFO] started frobbing bielr/biotrees-rs
[INFO] finished frobbing bielr/biotrees-rs
[INFO] frobbed toml for bielr/biotrees-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bielr/biotrees-rs/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] testing bielr/biotrees-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/bielr/biotrees-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] c8b7ccc1f246689d188334fbe432df3e2981a3c7fc39709404cc8a8f4d9084fb
[INFO] running `"docker" "start" "-a" "c8b7ccc1f246689d188334fbe432df3e2981a3c7fc39709404cc8a8f4d9084fb"`
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling once_cell v0.1.8
[INFO] [stderr]    Compiling cached v0.8.1
[INFO] [stderr]    Compiling biotrees v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.29s
[INFO] running `"docker" "inspect" "c8b7ccc1f246689d188334fbe432df3e2981a3c7fc39709404cc8a8f4d9084fb"`
[INFO] running `"docker" "rm" "-f" "c8b7ccc1f246689d188334fbe432df3e2981a3c7fc39709404cc8a8f4d9084fb"`
[INFO] [stdout] c8b7ccc1f246689d188334fbe432df3e2981a3c7fc39709404cc8a8f4d9084fb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/bielr/biotrees-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a0c06244e8f87b482f560fa5979c292e65cb85bf70e48f1127055c4844dac0df
[INFO] running `"docker" "start" "-a" "a0c06244e8f87b482f560fa5979c292e65cb85bf70e48f1127055c4844dac0df"`
[INFO] [stderr]    Compiling biotrees v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `sym_desc_half`
[INFO] [stderr]   --> examples/enum_balance.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn sym_desc_half(t: &Shape) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sym_desc`
[INFO] [stderr]   --> examples/enum_balance.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn sym_desc(t: &Shape) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `depth_avg`
[INFO] [stderr]   --> examples/enum_balance.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn depth_avg<T>(t: &Phylo<T>) -> f64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `depth_var`
[INFO] [stderr]   --> examples/enum_balance.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn depth_var<T>(t: &Phylo<T>) -> f64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.87s
[INFO] running `"docker" "inspect" "a0c06244e8f87b482f560fa5979c292e65cb85bf70e48f1127055c4844dac0df"`
[INFO] running `"docker" "rm" "-f" "a0c06244e8f87b482f560fa5979c292e65cb85bf70e48f1127055c4844dac0df"`
[INFO] [stdout] a0c06244e8f87b482f560fa5979c292e65cb85bf70e48f1127055c4844dac0df
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/bielr/biotrees-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 93c7bff9117993cacefd1af88aff2ff44f222418bec815ddd3c2a406d42853ef
[INFO] running `"docker" "start" "-a" "93c7bff9117993cacefd1af88aff2ff44f222418bec815ddd3c2a406d42853ef"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/biotrees-025bde491f673374
[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 biotrees
[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" "93c7bff9117993cacefd1af88aff2ff44f222418bec815ddd3c2a406d42853ef"`
[INFO] running `"docker" "rm" "-f" "93c7bff9117993cacefd1af88aff2ff44f222418bec815ddd3c2a406d42853ef"`
[INFO] [stdout] 93c7bff9117993cacefd1af88aff2ff44f222418bec815ddd3c2a406d42853ef