[INFO] crate slack 0.22.0 is already in cache
[INFO] extracting crate slack 0.22.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/slack/0.22.0
[INFO] extracting crate slack 0.22.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/slack/0.22.0
[INFO] validating manifest of slack-0.22.0 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 slack-0.22.0 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 slack-0.22.0
[INFO] finished frobbing slack-0.22.0
[INFO] frobbed toml for slack-0.22.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/slack/0.22.0/Cargo.toml
[INFO] started frobbing slack-0.22.0
[INFO] finished frobbing slack-0.22.0
[INFO] frobbed toml for slack-0.22.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/slack/0.22.0/Cargo.toml
[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 slack-0.22.0 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/slack/0.22.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c6e77b36e43a288a3d2538cd18c9aa3566a3839ce4517a08033a295acb5fcbb6
[INFO] running `"docker" "start" "-a" "c6e77b36e43a288a3d2538cd18c9aa3566a3839ce4517a08033a295acb5fcbb6"`
[INFO] [stderr]    Compiling tokio-threadpool v0.1.15
[INFO] [stderr]    Compiling tungstenite v0.6.1
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling reqwest v0.9.20
[INFO] [stderr]    Compiling slack_api v0.21.0
[INFO] [stderr]    Compiling slack v0.22.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:112:32
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `"docker" "inspect" "c6e77b36e43a288a3d2538cd18c9aa3566a3839ce4517a08033a295acb5fcbb6"`
[INFO] running `"docker" "rm" "-f" "c6e77b36e43a288a3d2538cd18c9aa3566a3839ce4517a08033a295acb5fcbb6"`
[INFO] [stdout] c6e77b36e43a288a3d2538cd18c9aa3566a3839ce4517a08033a295acb5fcbb6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/slack/0.22.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 32d0b4346837ac7fc45eb1c9d08a5bcc35fd63376c7e60712fe6cb970391defa
[INFO] running `"docker" "start" "-a" "32d0b4346837ac7fc45eb1c9d08a5bcc35fd63376c7e60712fe6cb970391defa"`
[INFO] [stderr]    Compiling slack v0.22.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:112:32
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.43s
[INFO] running `"docker" "inspect" "32d0b4346837ac7fc45eb1c9d08a5bcc35fd63376c7e60712fe6cb970391defa"`
[INFO] running `"docker" "rm" "-f" "32d0b4346837ac7fc45eb1c9d08a5bcc35fd63376c7e60712fe6cb970391defa"`
[INFO] [stdout] 32d0b4346837ac7fc45eb1c9d08a5bcc35fd63376c7e60712fe6cb970391defa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/slack/0.22.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] f203cf2199898b7447c200e3bc24c56e9101b17f24d2e74978320da3773d6bd2
[INFO] running `"docker" "start" "-a" "f203cf2199898b7447c200e3bc24c56e9101b17f24d2e74978320da3773d6bd2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slack-90f2fd50a5d564b8
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test events::tests::decode_legacy_presence_change_event ... ok
[INFO] [stdout] test events::tests::decode_presence_change_event ... ok
[INFO] [stdout] test events::tests::decode_sent_not_ok ... ok
[INFO] [stdout] test events::tests::decode_sent_ok ... ok
[INFO] [stdout] test events::tests::decode_short_standard_message ... ok
[INFO] [stdout] test events::tests::decode_extended_standard_message ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slack
[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" "f203cf2199898b7447c200e3bc24c56e9101b17f24d2e74978320da3773d6bd2"`
[INFO] running `"docker" "rm" "-f" "f203cf2199898b7447c200e3bc24c56e9101b17f24d2e74978320da3773d6bd2"`
[INFO] [stdout] f203cf2199898b7447c200e3bc24c56e9101b17f24d2e74978320da3773d6bd2