[INFO] crate weakjson 0.0.7 is already in cache
[INFO] extracting crate weakjson 0.0.7 into work/ex/beta-1.37-6/sources/1.36.0/reg/weakjson/0.0.7
[INFO] extracting crate weakjson 0.0.7 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/weakjson/0.0.7
[INFO] validating manifest of weakjson-0.0.7 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 weakjson-0.0.7 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 weakjson-0.0.7
[INFO] finished frobbing weakjson-0.0.7
[INFO] frobbed toml for weakjson-0.0.7 written to work/ex/beta-1.37-6/sources/1.36.0/reg/weakjson/0.0.7/Cargo.toml
[INFO] started frobbing weakjson-0.0.7
[INFO] finished frobbing weakjson-0.0.7
[INFO] frobbed toml for weakjson-0.0.7 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/weakjson/0.0.7/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 weakjson-0.0.7 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-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/weakjson/0.0.7:/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] 3f50f1c4019a32b900349fd2e474920a412440d2b8ee6796c0647f91938ae28a
[INFO] running `"docker" "start" "-a" "3f50f1c4019a32b900349fd2e474920a412440d2b8ee6796c0647f91938ae28a"`
[INFO] [stderr]    Compiling weakjson v0.0.7 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "3f50f1c4019a32b900349fd2e474920a412440d2b8ee6796c0647f91938ae28a"`
[INFO] running `"docker" "rm" "-f" "3f50f1c4019a32b900349fd2e474920a412440d2b8ee6796c0647f91938ae28a"`
[INFO] [stdout] 3f50f1c4019a32b900349fd2e474920a412440d2b8ee6796c0647f91938ae28a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/weakjson/0.0.7:/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] 09f79fabf4dbfc6fd418d2da697053213194fc1884ef1ab4675bc2469d18fef6
[INFO] running `"docker" "start" "-a" "09f79fabf4dbfc6fd418d2da697053213194fc1884ef1ab4675bc2469d18fef6"`
[INFO] [stderr]    Compiling weakjson v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] error[E0573]: expected type, found variant `String`
[INFO] [stderr]   --> src/weak_tests.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn mk_object(items: &[(String, Json)]) -> Json {
[INFO] [stderr]    |                        ^^^^^^ not a type
[INFO] [stderr] help: possible better candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::prelude::v1::String;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::string::String;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `weakjson`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "09f79fabf4dbfc6fd418d2da697053213194fc1884ef1ab4675bc2469d18fef6"`
[INFO] running `"docker" "rm" "-f" "09f79fabf4dbfc6fd418d2da697053213194fc1884ef1ab4675bc2469d18fef6"`
[INFO] [stdout] 09f79fabf4dbfc6fd418d2da697053213194fc1884ef1ab4675bc2469d18fef6