[INFO] updating cached repository ifschleife/rust_tracing
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ifschleife/rust_tracing
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ifschleife/rust_tracing" "work/ex/beta-1.38-1/sources/1.37.0/gh/ifschleife/rust_tracing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ifschleife/rust_tracing'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ifschleife/rust_tracing" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ifschleife/rust_tracing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ifschleife/rust_tracing'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 522d94d80bbe517a860ca714ad8c5e038a37d40e
[INFO] sha for GitHub repo ifschleife/rust_tracing: 522d94d80bbe517a860ca714ad8c5e038a37d40e
[INFO] validating manifest of ifschleife/rust_tracing 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 ifschleife/rust_tracing 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 ifschleife/rust_tracing
[INFO] finished frobbing ifschleife/rust_tracing
[INFO] frobbed toml for ifschleife/rust_tracing written to work/ex/beta-1.38-1/sources/1.37.0/gh/ifschleife/rust_tracing/Cargo.toml
[INFO] started frobbing ifschleife/rust_tracing
[INFO] finished frobbing ifschleife/rust_tracing
[INFO] frobbed toml for ifschleife/rust_tracing written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ifschleife/rust_tracing/Cargo.toml
[INFO] crate ifschleife/rust_tracing 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] testing ifschleife/rust_tracing against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ifschleife/rust_tracing:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 83bc78baf6a702ddb27c6c3352c46a97cf5e5fe88bd576923c534db60eb88314
[INFO] running `"docker" "start" "-a" "83bc78baf6a702ddb27c6c3352c46a97cf5e5fe88bd576923c534db60eb88314"`
[INFO] [stderr]    Compiling rand v0.5.2
[INFO] [stderr]    Compiling rust_tracing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `"docker" "inspect" "83bc78baf6a702ddb27c6c3352c46a97cf5e5fe88bd576923c534db60eb88314"`
[INFO] running `"docker" "rm" "-f" "83bc78baf6a702ddb27c6c3352c46a97cf5e5fe88bd576923c534db60eb88314"`
[INFO] [stdout] 83bc78baf6a702ddb27c6c3352c46a97cf5e5fe88bd576923c534db60eb88314
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ifschleife/rust_tracing:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 48f53f49ee698469c840559a8813ed24b07e7039dbcc99733e09439944c759eb
[INFO] running `"docker" "start" "-a" "48f53f49ee698469c840559a8813ed24b07e7039dbcc99733e09439944c759eb"`
[INFO] [stderr]    Compiling rust_tracing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "48f53f49ee698469c840559a8813ed24b07e7039dbcc99733e09439944c759eb"`
[INFO] running `"docker" "rm" "-f" "48f53f49ee698469c840559a8813ed24b07e7039dbcc99733e09439944c759eb"`
[INFO] [stdout] 48f53f49ee698469c840559a8813ed24b07e7039dbcc99733e09439944c759eb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ifschleife/rust_tracing:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 5fb579cf2bb1e9e65902c11d01157452bb70bd751fd56eee8bdd288514ac6a5b
[INFO] running `"docker" "start" "-a" "5fb579cf2bb1e9e65902c11d01157452bb70bd751fd56eee8bdd288514ac6a5b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_tracing-a5602f3e44820794
[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" "5fb579cf2bb1e9e65902c11d01157452bb70bd751fd56eee8bdd288514ac6a5b"`
[INFO] running `"docker" "rm" "-f" "5fb579cf2bb1e9e65902c11d01157452bb70bd751fd56eee8bdd288514ac6a5b"`
[INFO] [stdout] 5fb579cf2bb1e9e65902c11d01157452bb70bd751fd56eee8bdd288514ac6a5b