[INFO] updating cached repository neildanson/rust_tracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/neildanson/rust_tracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/neildanson/rust_tracer" "work/ex/beta-1.37-6/sources/1.36.0/gh/neildanson/rust_tracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/neildanson/rust_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/neildanson/rust_tracer" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/neildanson/rust_tracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/neildanson/rust_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 12dbd102ce3637470028f2e7a013f7f688bec870
[INFO] sha for GitHub repo neildanson/rust_tracer: 12dbd102ce3637470028f2e7a013f7f688bec870
[INFO] validating manifest of neildanson/rust_tracer 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 neildanson/rust_tracer 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 neildanson/rust_tracer
[INFO] finished frobbing neildanson/rust_tracer
[INFO] frobbed toml for neildanson/rust_tracer written to work/ex/beta-1.37-6/sources/1.36.0/gh/neildanson/rust_tracer/Cargo.toml
[INFO] started frobbing neildanson/rust_tracer
[INFO] finished frobbing neildanson/rust_tracer
[INFO] frobbed toml for neildanson/rust_tracer written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/neildanson/rust_tracer/Cargo.toml
[INFO] crate neildanson/rust_tracer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/neildanson/rust_tracer/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[INFO] the lockfile is outdated, regenerating it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" "+1.36.0" "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 neildanson/rust_tracer against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/neildanson/rust_tracer:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 85061d767be0e822bb5d8250e252c84b01fa15131f95873b5228ab9e7fd382ca
[INFO] running `"docker" "start" "-a" "85061d767be0e822bb5d8250e252c84b01fa15131f95873b5228ab9e7fd382ca"`
[INFO] [stderr]    Compiling lzw v0.9.0
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling gif v0.7.0
[INFO] [stderr]    Compiling png v0.4.3
[INFO] [stderr]    Compiling image v0.7.2
[INFO] [stderr]    Compiling rust_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.91s
[INFO] running `"docker" "inspect" "85061d767be0e822bb5d8250e252c84b01fa15131f95873b5228ab9e7fd382ca"`
[INFO] running `"docker" "rm" "-f" "85061d767be0e822bb5d8250e252c84b01fa15131f95873b5228ab9e7fd382ca"`
[INFO] [stdout] 85061d767be0e822bb5d8250e252c84b01fa15131f95873b5228ab9e7fd382ca
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/neildanson/rust_tracer:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] fcb3d788bea10bb0662e06a3bd1e95db74aa116deb119160233e5c40a839075c
[INFO] running `"docker" "start" "-a" "fcb3d788bea10bb0662e06a3bd1e95db74aa116deb119160233e5c40a839075c"`
[INFO] [stderr]    Compiling rust_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `"docker" "inspect" "fcb3d788bea10bb0662e06a3bd1e95db74aa116deb119160233e5c40a839075c"`
[INFO] running `"docker" "rm" "-f" "fcb3d788bea10bb0662e06a3bd1e95db74aa116deb119160233e5c40a839075c"`
[INFO] [stdout] fcb3d788bea10bb0662e06a3bd1e95db74aa116deb119160233e5c40a839075c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/neildanson/rust_tracer:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 11379d7a03abcd265dd9bf9f8d690ff38579d262e99300dac86f138353f44a0a
[INFO] running `"docker" "start" "-a" "11379d7a03abcd265dd9bf9f8d690ff38579d262e99300dac86f138353f44a0a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_tracer-6d31afff7e1fb41f
[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" "11379d7a03abcd265dd9bf9f8d690ff38579d262e99300dac86f138353f44a0a"`
[INFO] running `"docker" "rm" "-f" "11379d7a03abcd265dd9bf9f8d690ff38579d262e99300dac86f138353f44a0a"`
[INFO] [stdout] 11379d7a03abcd265dd9bf9f8d690ff38579d262e99300dac86f138353f44a0a