[INFO] updating cached repository rainbowbismuth/git-descendants
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rainbowbismuth/git-descendants
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rainbowbismuth/git-descendants" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/rainbowbismuth/git-descendants"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/rainbowbismuth/git-descendants'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rainbowbismuth/git-descendants" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/rainbowbismuth/git-descendants"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/rainbowbismuth/git-descendants'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] db62dc11026d8b6b2bd650389682815c92d23faa
[INFO] sha for GitHub repo rainbowbismuth/git-descendants: db62dc11026d8b6b2bd650389682815c92d23faa
[INFO] validating manifest of rainbowbismuth/git-descendants on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rainbowbismuth/git-descendants on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rainbowbismuth/git-descendants
[INFO] finished frobbing rainbowbismuth/git-descendants
[INFO] frobbed toml for rainbowbismuth/git-descendants written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/rainbowbismuth/git-descendants/Cargo.toml
[INFO] started frobbing rainbowbismuth/git-descendants
[INFO] finished frobbing rainbowbismuth/git-descendants
[INFO] frobbed toml for rainbowbismuth/git-descendants written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/rainbowbismuth/git-descendants/Cargo.toml
[INFO] crate rainbowbismuth/git-descendants has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rainbowbismuth/git-descendants against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/rainbowbismuth/git-descendants:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 250466d8360f45b019cee52898bb09ed14f7218177d880786eec8e4d7b0e23ff
[INFO] running `"docker" "start" "-a" "250466d8360f45b019cee52898bb09ed14f7218177d880786eec8e4d7b0e23ff"`
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.6
[INFO] [stderr]    Compiling cmake v0.1.29
[INFO] [stderr]    Compiling openssl-sys v0.9.26
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling curl-sys v0.4.1
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling libssh2-sys v0.2.6
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling git-descendents v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 35s
[INFO] running `"docker" "inspect" "250466d8360f45b019cee52898bb09ed14f7218177d880786eec8e4d7b0e23ff"`
[INFO] running `"docker" "rm" "-f" "250466d8360f45b019cee52898bb09ed14f7218177d880786eec8e4d7b0e23ff"`
[INFO] [stdout] 250466d8360f45b019cee52898bb09ed14f7218177d880786eec8e4d7b0e23ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/rainbowbismuth/git-descendants:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] a76de8218bf46aaf6feff509cd6ded17c34f4ae92b02b0c32998c5356a42bdd4
[INFO] running `"docker" "start" "-a" "a76de8218bf46aaf6feff509cd6ded17c34f4ae92b02b0c32998c5356a42bdd4"`
[INFO] [stderr]    Compiling git-descendents v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "a76de8218bf46aaf6feff509cd6ded17c34f4ae92b02b0c32998c5356a42bdd4"`
[INFO] running `"docker" "rm" "-f" "a76de8218bf46aaf6feff509cd6ded17c34f4ae92b02b0c32998c5356a42bdd4"`
[INFO] [stdout] a76de8218bf46aaf6feff509cd6ded17c34f4ae92b02b0c32998c5356a42bdd4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/rainbowbismuth/git-descendants:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 5a9eaa978bea710d00f7e0be80213a4aa1171ecf72a0f9f6083c2e074d0a5deb
[INFO] running `"docker" "start" "-a" "5a9eaa978bea710d00f7e0be80213a4aa1171ecf72a0f9f6083c2e074d0a5deb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/git_descendents-296d018f3d3e12b7
[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" "5a9eaa978bea710d00f7e0be80213a4aa1171ecf72a0f9f6083c2e074d0a5deb"`
[INFO] running `"docker" "rm" "-f" "5a9eaa978bea710d00f7e0be80213a4aa1171ecf72a0f9f6083c2e074d0a5deb"`
[INFO] [stdout] 5a9eaa978bea710d00f7e0be80213a4aa1171ecf72a0f9f6083c2e074d0a5deb