[INFO] updating cached repository ryota-ka/rust-yo-slack-adapter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ryota-ka/rust-yo-slack-adapter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ryota-ka/rust-yo-slack-adapter" "work/ex/beta-1.38-1/sources/1.37.0/gh/ryota-ka/rust-yo-slack-adapter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ryota-ka/rust-yo-slack-adapter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ryota-ka/rust-yo-slack-adapter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ryota-ka/rust-yo-slack-adapter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ryota-ka/rust-yo-slack-adapter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5fa6ea88e8a684d18082e94c04bc5c3556de788c
[INFO] sha for GitHub repo ryota-ka/rust-yo-slack-adapter: 5fa6ea88e8a684d18082e94c04bc5c3556de788c
[INFO] validating manifest of ryota-ka/rust-yo-slack-adapter 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 ryota-ka/rust-yo-slack-adapter 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 ryota-ka/rust-yo-slack-adapter
[INFO] finished frobbing ryota-ka/rust-yo-slack-adapter
[INFO] frobbed toml for ryota-ka/rust-yo-slack-adapter written to work/ex/beta-1.38-1/sources/1.37.0/gh/ryota-ka/rust-yo-slack-adapter/Cargo.toml
[INFO] started frobbing ryota-ka/rust-yo-slack-adapter
[INFO] finished frobbing ryota-ka/rust-yo-slack-adapter
[INFO] frobbed toml for ryota-ka/rust-yo-slack-adapter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ryota-ka/rust-yo-slack-adapter/Cargo.toml
[INFO] crate ryota-ka/rust-yo-slack-adapter 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ryota-ka/rust-yo-slack-adapter/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 ryota-ka/rust-yo-slack-adapter 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ryota-ka/rust-yo-slack-adapter:/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] 3a478f36284d9a3a529d73e18e3df8e20e537dd25fa873108f2687fa0ac46aa4
[INFO] running `"docker" "start" "-a" "3a478f36284d9a3a529d73e18e3df8e20e537dd25fa873108f2687fa0ac46aa4"`
[INFO] [stderr]    Compiling url v2.1.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling rust-yo-slack-adapter v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: extern crate `percent_encoding` is private, and cannot be re-exported (error E0365), consider declaring with `pub`
[INFO] [stderr]  --> src/yo/query.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::url::percent_encoding;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(pub_use_of_private_extern_crate)] on by default
[INFO] [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/yo/query.rs:72:60
[INFO] [stderr]    |
[INFO] [stderr] 72 |         let decoded_query_string = match String::from_utf8(decoded_query_bytes) {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found struct `percent_encoding::PercentDecode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::vec::Vec<u8>`
[INFO] [stderr]               found type `percent_encoding::PercentDecode<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/yo/query.rs:85:49
[INFO] [stderr]    |
[INFO] [stderr] 85 |                         match String::from_utf8(decoded_url_bytes) {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found struct `percent_encoding::PercentDecode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::vec::Vec<u8>`
[INFO] [stderr]               found type `percent_encoding::PercentDecode<'_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `rust-yo-slack-adapter`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3a478f36284d9a3a529d73e18e3df8e20e537dd25fa873108f2687fa0ac46aa4"`
[INFO] running `"docker" "rm" "-f" "3a478f36284d9a3a529d73e18e3df8e20e537dd25fa873108f2687fa0ac46aa4"`
[INFO] [stdout] 3a478f36284d9a3a529d73e18e3df8e20e537dd25fa873108f2687fa0ac46aa4