[INFO] fetching crate slack-hook 0.8.0...
[INFO] checking slack-hook-0.8.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate slack-hook 0.8.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate slack-hook 0.8.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slack-hook 0.8.0
[INFO] finished tweaking crates.io crate slack-hook 0.8.0
[INFO] tweaked toml for crates.io crate slack-hook 0.8.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 970e2310019b0716f9c73f9f24194419b8e2758471cbe9e388cf20ed0a4fcb5c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "970e2310019b0716f9c73f9f24194419b8e2758471cbe9e388cf20ed0a4fcb5c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking slack-hook v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |     foreign_links {
[INFO] [stderr] 3  | |         Utf8(::std::str::Utf8Error) #[doc = "utf8 error, slack responses should be valid utf8"];
[INFO] [stderr] 4  | |         Serialize(::serde_json::error::Error) #[doc = "`serde_json::error::Error`"];
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |     foreign_links {
[INFO] [stderr] 3  | |         Utf8(::std::str::Utf8Error) #[doc = "utf8 error, slack responses should be valid utf8"];
[INFO] [stderr] 4  | |         Serialize(::serde_json::error::Error) #[doc = "`serde_json::error::Error`"];
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |     foreign_links {
[INFO] [stderr] 3  | |         Utf8(::std::str::Utf8Error) #[doc = "utf8 error, slack responses should be valid utf8"];
[INFO] [stderr] 4  | |         Serialize(::serde_json::error::Error) #[doc = "`serde_json::error::Error`"];
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:3:24
[INFO] [stderr]    |
[INFO] [stderr] 3  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |     foreign_links {
[INFO] [stderr] 3  | |         Utf8(::std::str::Utf8Error) #[doc = "utf8 error, slack responses should be valid utf8"];
[INFO] [stderr] 4  | |         Serialize(::serde_json::error::Error) #[doc = "`serde_json::error::Error`"];
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `slack-hook`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "970e2310019b0716f9c73f9f24194419b8e2758471cbe9e388cf20ed0a4fcb5c"`
[INFO] running `"docker" "rm" "-f" "970e2310019b0716f9c73f9f24194419b8e2758471cbe9e388cf20ed0a4fcb5c"`
[INFO] [stdout] 970e2310019b0716f9c73f9f24194419b8e2758471cbe9e388cf20ed0a4fcb5c