[INFO] updating cached repository LeakyBucket/opencensus
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/LeakyBucket/opencensus
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/LeakyBucket/opencensus" "work/ex/beta-1.38-1/sources/1.37.0/gh/LeakyBucket/opencensus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/LeakyBucket/opencensus'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LeakyBucket/opencensus" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LeakyBucket/opencensus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LeakyBucket/opencensus'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9eaa184c3b11043da77d027fa643fb7b4fdb809e
[INFO] sha for GitHub repo LeakyBucket/opencensus: 9eaa184c3b11043da77d027fa643fb7b4fdb809e
[INFO] validating manifest of LeakyBucket/opencensus 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 LeakyBucket/opencensus 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 LeakyBucket/opencensus
[INFO] finished frobbing LeakyBucket/opencensus
[INFO] frobbed toml for LeakyBucket/opencensus written to work/ex/beta-1.38-1/sources/1.37.0/gh/LeakyBucket/opencensus/Cargo.toml
[INFO] started frobbing LeakyBucket/opencensus
[INFO] finished frobbing LeakyBucket/opencensus
[INFO] frobbed toml for LeakyBucket/opencensus written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LeakyBucket/opencensus/Cargo.toml
[INFO] crate LeakyBucket/opencensus 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 LeakyBucket/opencensus 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/LeakyBucket/opencensus:/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] e8f9df01beeaf3cd1f9871f1dd5ecf1be0d8adb7a924af7cf1b5a5e8ccda25c6
[INFO] running `"docker" "start" "-a" "e8f9df01beeaf3cd1f9871f1dd5ecf1be0d8adb7a924af7cf1b5a5e8ccda25c6"`
[INFO] [stderr]    Compiling rand v0.6.0
[INFO] [stderr]    Compiling opencensus v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find value `trace_opts` in this scope
[INFO] [stderr]    --> src/trace/mod.rs:100:22
[INFO] [stderr]     |
[INFO] [stderr] 100 |             options: trace_opts,
[INFO] [stderr]     |                      ^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `state` in this scope
[INFO] [stderr]    --> src/trace/mod.rs:101:20
[INFO] [stderr]     |
[INFO] [stderr] 101 |             state: state,
[INFO] [stderr]     |                    ^^^^^ a field by this name exists in `Self`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `opencensus`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e8f9df01beeaf3cd1f9871f1dd5ecf1be0d8adb7a924af7cf1b5a5e8ccda25c6"`
[INFO] running `"docker" "rm" "-f" "e8f9df01beeaf3cd1f9871f1dd5ecf1be0d8adb7a924af7cf1b5a5e8ccda25c6"`
[INFO] [stdout] e8f9df01beeaf3cd1f9871f1dd5ecf1be0d8adb7a924af7cf1b5a5e8ccda25c6