[INFO] updating cached repository ferrous-systems/cargo-flamegraph
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ferrous-systems/cargo-flamegraph
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ferrous-systems/cargo-flamegraph" "work/ex/beta-1.38-1/sources/1.37.0/gh/ferrous-systems/cargo-flamegraph"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ferrous-systems/cargo-flamegraph'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ferrous-systems/cargo-flamegraph" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ferrous-systems/cargo-flamegraph"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ferrous-systems/cargo-flamegraph'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cd5855f08ea12143272c276ed477a7c6903eae67
[INFO] sha for GitHub repo ferrous-systems/cargo-flamegraph: cd5855f08ea12143272c276ed477a7c6903eae67
[INFO] validating manifest of ferrous-systems/cargo-flamegraph 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 ferrous-systems/cargo-flamegraph 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 ferrous-systems/cargo-flamegraph
[INFO] finished frobbing ferrous-systems/cargo-flamegraph
[INFO] frobbed toml for ferrous-systems/cargo-flamegraph written to work/ex/beta-1.38-1/sources/1.37.0/gh/ferrous-systems/cargo-flamegraph/Cargo.toml
[INFO] started frobbing ferrous-systems/cargo-flamegraph
[INFO] finished frobbing ferrous-systems/cargo-flamegraph
[INFO] frobbed toml for ferrous-systems/cargo-flamegraph written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ferrous-systems/cargo-flamegraph/Cargo.toml
[INFO] crate ferrous-systems/cargo-flamegraph 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] 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 ferrous-systems/cargo-flamegraph 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-2/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/ferrous-systems/cargo-flamegraph:/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] 098ca32d4443544070adb7d4670279b81802c62cf1b327a776d5a919fd6875b4
[INFO] running `"docker" "start" "-a" "098ca32d4443544070adb7d4670279b81802c62cf1b327a776d5a919fd6875b4"`
[INFO] [stderr]    Compiling str_stack v0.1.0
[INFO] [stderr]    Compiling num-format v0.4.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling quick-xml v0.13.3
[INFO] [stderr]    Compiling inferno v0.4.1
[INFO] [stderr]    Compiling cargo_metadata v0.7.3
[INFO] [stderr]    Compiling flamegraph v0.1.13 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.07s
[INFO] running `"docker" "inspect" "098ca32d4443544070adb7d4670279b81802c62cf1b327a776d5a919fd6875b4"`
[INFO] running `"docker" "rm" "-f" "098ca32d4443544070adb7d4670279b81802c62cf1b327a776d5a919fd6875b4"`
[INFO] [stdout] 098ca32d4443544070adb7d4670279b81802c62cf1b327a776d5a919fd6875b4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/ferrous-systems/cargo-flamegraph:/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] d4c3712854596575c10e9847f8520e25c87800d1afd55d60b393c632f08caa02
[INFO] running `"docker" "start" "-a" "d4c3712854596575c10e9847f8520e25c87800d1afd55d60b393c632f08caa02"`
[INFO] [stderr]    Compiling flamegraph v0.1.13 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `"docker" "inspect" "d4c3712854596575c10e9847f8520e25c87800d1afd55d60b393c632f08caa02"`
[INFO] running `"docker" "rm" "-f" "d4c3712854596575c10e9847f8520e25c87800d1afd55d60b393c632f08caa02"`
[INFO] [stdout] d4c3712854596575c10e9847f8520e25c87800d1afd55d60b393c632f08caa02
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/ferrous-systems/cargo-flamegraph:/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] 43edfd4020257dd30ffff2b54e2ccb09ee475f5c6cac7791ea722976cf187bc2
[INFO] running `"docker" "start" "-a" "43edfd4020257dd30ffff2b54e2ccb09ee475f5c6cac7791ea722976cf187bc2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flamegraph-babc7150af972c17
[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]      Running /opt/crater/target/debug/deps/cargo_flamegraph-6031d385bd4d96a6
[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]      Running /opt/crater/target/debug/deps/flamegraph-ee85be6602daf9c0
[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 flamegraph
[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" "43edfd4020257dd30ffff2b54e2ccb09ee475f5c6cac7791ea722976cf187bc2"`
[INFO] running `"docker" "rm" "-f" "43edfd4020257dd30ffff2b54e2ccb09ee475f5c6cac7791ea722976cf187bc2"`
[INFO] [stdout] 43edfd4020257dd30ffff2b54e2ccb09ee475f5c6cac7791ea722976cf187bc2