[INFO] fetching crate monotron-api 0.2.0...
[INFO] extracting crate monotron-api 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/monotron-api/0.2.0
[INFO] extracting crate monotron-api 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/monotron-api/0.2.0
[INFO] validating manifest of monotron-api-0.2.0 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 monotron-api-0.2.0 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 monotron-api-0.2.0
[INFO] finished frobbing monotron-api-0.2.0
[INFO] frobbed toml for monotron-api-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/monotron-api/0.2.0/Cargo.toml
[INFO] started frobbing monotron-api-0.2.0
[INFO] finished frobbing monotron-api-0.2.0
[INFO] frobbed toml for monotron-api-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/monotron-api/0.2.0/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 monotron-api-0.2.0 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/monotron-api/0.2.0:/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] 9eca644d137bcd8c5d3bab0e6f002b671b7549ea55b264aad342c34228c698aa
[INFO] running `"docker" "start" "-a" "9eca644d137bcd8c5d3bab0e6f002b671b7549ea55b264aad342c34228c698aa"`
[INFO] [stderr]    Compiling monotron-api v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "9eca644d137bcd8c5d3bab0e6f002b671b7549ea55b264aad342c34228c698aa"`
[INFO] running `"docker" "rm" "-f" "9eca644d137bcd8c5d3bab0e6f002b671b7549ea55b264aad342c34228c698aa"`
[INFO] [stdout] 9eca644d137bcd8c5d3bab0e6f002b671b7549ea55b264aad342c34228c698aa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/monotron-api/0.2.0:/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] e0b1cc9ddfea24752a98e633f79a30bf36b93b6ba28015dad72d85a379e241bf
[INFO] running `"docker" "start" "-a" "e0b1cc9ddfea24752a98e633f79a30bf36b93b6ba28015dad72d85a379e241bf"`
[INFO] [stderr]    Compiling monotron-api v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0560]: struct `Timestamp` has no field named `day`
[INFO] [stderr]    --> src/lib.rs:546:21
[INFO] [stderr]     |
[INFO] [stderr] 546 |                     day: 16,
[INFO] [stderr]     |                     ^^^ help: a field with a similar name exists: `days`
[INFO] [stderr] 
[INFO] [stderr] error[E0560]: struct `Timestamp` has no field named `day`
[INFO] [stderr]    --> src/lib.rs:557:21
[INFO] [stderr]     |
[INFO] [stderr] 557 |                     day: 17,
[INFO] [stderr]     |                     ^^^ help: a field with a similar name exists: `days`
[INFO] [stderr] 
[INFO] [stderr] error[E0560]: struct `Timestamp` has no field named `day`
[INFO] [stderr]    --> src/lib.rs:568:21
[INFO] [stderr]     |
[INFO] [stderr] 568 |                     day: 18,
[INFO] [stderr]     |                     ^^^ help: a field with a similar name exists: `days`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0560`.
[INFO] [stderr] error: Could not compile `monotron-api`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e0b1cc9ddfea24752a98e633f79a30bf36b93b6ba28015dad72d85a379e241bf"`
[INFO] running `"docker" "rm" "-f" "e0b1cc9ddfea24752a98e633f79a30bf36b93b6ba28015dad72d85a379e241bf"`
[INFO] [stdout] e0b1cc9ddfea24752a98e633f79a30bf36b93b6ba28015dad72d85a379e241bf