[INFO] crate flattree 2.0.0 is already in cache
[INFO] extracting crate flattree 2.0.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/flattree/2.0.0
[INFO] extracting crate flattree 2.0.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/flattree/2.0.0
[INFO] validating manifest of flattree-2.0.0 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 flattree-2.0.0 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 flattree-2.0.0
[INFO] finished frobbing flattree-2.0.0
[INFO] frobbed toml for flattree-2.0.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/flattree/2.0.0/Cargo.toml
[INFO] started frobbing flattree-2.0.0
[INFO] finished frobbing flattree-2.0.0
[INFO] frobbed toml for flattree-2.0.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/flattree/2.0.0/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 flattree-2.0.0 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/flattree/2.0.0:/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] a1822e086d1c1de766614c723b6dd200fbf66f2ff73e172f720c3540f322a169
[INFO] running `"docker" "start" "-a" "a1822e086d1c1de766614c723b6dd200fbf66f2ff73e172f720c3540f322a169"`
[INFO] [stderr]    Compiling flattree v2.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "a1822e086d1c1de766614c723b6dd200fbf66f2ff73e172f720c3540f322a169"`
[INFO] running `"docker" "rm" "-f" "a1822e086d1c1de766614c723b6dd200fbf66f2ff73e172f720c3540f322a169"`
[INFO] [stdout] a1822e086d1c1de766614c723b6dd200fbf66f2ff73e172f720c3540f322a169
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/flattree/2.0.0:/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] b867ddfcafc77a870fabe321f587916260c93487bcf88f06eb4ba184134f9698
[INFO] running `"docker" "start" "-a" "b867ddfcafc77a870fabe321f587916260c93487bcf88f06eb4ba184134f9698"`
[INFO] [stderr]    Compiling flattree v2.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "b867ddfcafc77a870fabe321f587916260c93487bcf88f06eb4ba184134f9698"`
[INFO] running `"docker" "rm" "-f" "b867ddfcafc77a870fabe321f587916260c93487bcf88f06eb4ba184134f9698"`
[INFO] [stdout] b867ddfcafc77a870fabe321f587916260c93487bcf88f06eb4ba184134f9698
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/flattree/2.0.0:/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] 63d195981dfcc75ecbc85a1b6689e47c2871dc781a9b64dad0c8e69f87dda3a2
[INFO] running `"docker" "start" "-a" "63d195981dfcc75ecbc85a1b6689e47c2871dc781a9b64dad0c8e69f87dda3a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flattree-473aaf0b113a1f48
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test test_child_to_parent_to_child ... ok
[INFO] [stdout] test test_children ... ok
[INFO] [stdout] test test_base_blocks ... ok
[INFO] [stdout] test test_full_roots ... ok
[INFO] [stdout] test test_count ... ok
[INFO] [stdout] test test_left_child ... ok
[INFO] [stdout] test test_left_span ... ok
[INFO] [stdout] test test_offsets ... ok
[INFO] [stdout] test test_siblings ... ok
[INFO] [stdout] test test_iterator_non_leaf_start ... ok
[INFO] [stdout] test test_parents ... ok
[INFO] [stdout] test test_parent_gt_int32 ... ok
[INFO] [stdout] test test_right_child ... ok
[INFO] [stdout] test test_right_span ... ok
[INFO] [stdout] test test_iterator ... ok
[INFO] [stdout] test test_depths ... ok
[INFO] [stdout] test test_spans ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flattree
[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" "63d195981dfcc75ecbc85a1b6689e47c2871dc781a9b64dad0c8e69f87dda3a2"`
[INFO] running `"docker" "rm" "-f" "63d195981dfcc75ecbc85a1b6689e47c2871dc781a9b64dad0c8e69f87dda3a2"`
[INFO] [stdout] 63d195981dfcc75ecbc85a1b6689e47c2871dc781a9b64dad0c8e69f87dda3a2