[INFO] fetching crate serde_json 1.0.40...
[INFO] extracting crate serde_json 1.0.40 into work/ex/beta-1.37-6/sources/1.36.0/reg/serde_json/1.0.40
[INFO] extracting crate serde_json 1.0.40 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/serde_json/1.0.40
[INFO] validating manifest of serde_json-1.0.40 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 serde_json-1.0.40 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 serde_json-1.0.40
[INFO] finished frobbing serde_json-1.0.40
[INFO] frobbed toml for serde_json-1.0.40 written to work/ex/beta-1.37-6/sources/1.36.0/reg/serde_json/1.0.40/Cargo.toml
[INFO] started frobbing serde_json-1.0.40
[INFO] finished frobbing serde_json-1.0.40
[INFO] frobbed toml for serde_json-1.0.40 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/serde_json/1.0.40/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 serde_json-1.0.40 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/reg/serde_json/1.0.40:/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] e4655781b535f751fe2a871b55d882e866bff0ba39472dedbe9fb6c955d6afe7
[INFO] running `"docker" "start" "-a" "e4655781b535f751fe2a871b55d882e866bff0ba39472dedbe9fb6c955d6afe7"`
[INFO] [stderr]    Compiling serde_json v1.0.40 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `"docker" "inspect" "e4655781b535f751fe2a871b55d882e866bff0ba39472dedbe9fb6c955d6afe7"`
[INFO] running `"docker" "rm" "-f" "e4655781b535f751fe2a871b55d882e866bff0ba39472dedbe9fb6c955d6afe7"`
[INFO] [stdout] e4655781b535f751fe2a871b55d882e866bff0ba39472dedbe9fb6c955d6afe7
[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/reg/serde_json/1.0.40:/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] cfcdf38eceff736c1fff5251b81dbe8c253452e1631a7cf987bdb4bd5e258492
[INFO] running `"docker" "start" "-a" "cfcdf38eceff736c1fff5251b81dbe8c253452e1631a7cf987bdb4bd5e258492"`
[INFO] [stderr]    Compiling stacker v0.1.5
[INFO] [stderr]    Compiling select-rustc v0.1.2
[INFO] [stderr]    Compiling automod v0.1.1
[INFO] [stderr]    Compiling toml v0.5.1
[INFO] [stderr]    Compiling serde_bytes v0.11.1
[INFO] [stderr]    Compiling serde_stacker v0.1.0
[INFO] [stderr]    Compiling trybuild v1.0.10
[INFO] [stderr]    Compiling serde_json v1.0.40 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.55s
[INFO] running `"docker" "inspect" "cfcdf38eceff736c1fff5251b81dbe8c253452e1631a7cf987bdb4bd5e258492"`
[INFO] running `"docker" "rm" "-f" "cfcdf38eceff736c1fff5251b81dbe8c253452e1631a7cf987bdb4bd5e258492"`
[INFO] [stdout] cfcdf38eceff736c1fff5251b81dbe8c253452e1631a7cf987bdb4bd5e258492
[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/reg/serde_json/1.0.40:/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] 96fe947509210d5aa39095eee307c402cd60b74c09f07a3f26f1559a14fbced5
[INFO] running `"docker" "start" "-a" "96fe947509210d5aa39095eee307c402cd60b74c09f07a3f26f1559a14fbced5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_json-35898006563f92c1
[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] [stderr]    Doc-tests serde_json
[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" "96fe947509210d5aa39095eee307c402cd60b74c09f07a3f26f1559a14fbced5"`
[INFO] running `"docker" "rm" "-f" "96fe947509210d5aa39095eee307c402cd60b74c09f07a3f26f1559a14fbced5"`
[INFO] [stdout] 96fe947509210d5aa39095eee307c402cd60b74c09f07a3f26f1559a14fbced5