[INFO] crate api 0.2.0 is already in cache
[INFO] extracting crate api 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/api/0.2.0
[INFO] extracting crate api 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/api/0.2.0
[INFO] validating manifest of 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 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 api-0.2.0
[INFO] finished frobbing api-0.2.0
[INFO] frobbed toml for api-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/api/0.2.0/Cargo.toml
[INFO] started frobbing api-0.2.0
[INFO] finished frobbing api-0.2.0
[INFO] frobbed toml for api-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing api-0.2.0 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-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ee68bc87f6f6993c792cdd127e171c163652035965daa4ad6b9d8bd65d69d29b
[INFO] running `"docker" "start" "-a" "ee68bc87f6f6993c792cdd127e171c163652035965daa4ad6b9d8bd65d69d29b"`
[INFO] [stderr]    Compiling api v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `"docker" "inspect" "ee68bc87f6f6993c792cdd127e171c163652035965daa4ad6b9d8bd65d69d29b"`
[INFO] running `"docker" "rm" "-f" "ee68bc87f6f6993c792cdd127e171c163652035965daa4ad6b9d8bd65d69d29b"`
[INFO] [stdout] ee68bc87f6f6993c792cdd127e171c163652035965daa4ad6b9d8bd65d69d29b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 912e36d2b704a7e58a6ca8ce77ffcfbcf919b48c29d5b198f21cfdb3a1047fd0
[INFO] running `"docker" "start" "-a" "912e36d2b704a7e58a6ca8ce77ffcfbcf919b48c29d5b198f21cfdb3a1047fd0"`
[INFO] [stderr]    Compiling api v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `httpbin`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `examples/httpbin.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `api`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "912e36d2b704a7e58a6ca8ce77ffcfbcf919b48c29d5b198f21cfdb3a1047fd0"`
[INFO] running `"docker" "rm" "-f" "912e36d2b704a7e58a6ca8ce77ffcfbcf919b48c29d5b198f21cfdb3a1047fd0"`
[INFO] [stdout] 912e36d2b704a7e58a6ca8ce77ffcfbcf919b48c29d5b198f21cfdb3a1047fd0