[INFO] fetching crate tracing-layer-slack 0.2.1...
[INFO] testing tracing-layer-slack-0.2.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate tracing-layer-slack 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tracing-layer-slack 0.2.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-layer-slack 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tracing-layer-slack 0.2.1
[INFO] tweaked toml for crates.io crate tracing-layer-slack 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate tracing-layer-slack 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83363d650978b778d232ad4ac9dac691f9f0e2d398558f41447434e56659b24a
[INFO] running `Command { std: "docker" "start" "-a" "83363d650978b778d232ad4ac9dac691f9f0e2d398558f41447434e56659b24a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83363d650978b778d232ad4ac9dac691f9f0e2d398558f41447434e56659b24a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83363d650978b778d232ad4ac9dac691f9f0e2d398558f41447434e56659b24a", kill_on_drop: false }`
[INFO] [stdout] 83363d650978b778d232ad4ac9dac691f9f0e2d398558f41447434e56659b24a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be5ec0eecbc47f336f6fd47d1c6d99249f661713cd04a667c5b0895c3efdf8db
[INFO] running `Command { std: "docker" "start" "-a" "be5ec0eecbc47f336f6fd47d1c6d99249f661713cd04a667c5b0895c3efdf8db", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tracing-subscriber v0.2.19
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling sct v0.6.1
[INFO] [stderr]    Compiling rustls v0.19.1
[INFO] [stderr]    Compiling webpki-roots v0.21.1
[INFO] [stderr]    Compiling pin-project v1.0.7
[INFO] [stderr]    Compiling tracing-bunyan-formatter v0.2.4
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling tokio-rustls v0.22.0
[INFO] [stderr]    Compiling h2 v0.3.3
[INFO] [stderr]    Compiling hyper v0.14.10
[INFO] [stderr]    Compiling hyper-rustls v0.22.1
[INFO] [stderr]    Compiling reqwest v0.11.4
[INFO] [stderr]    Compiling tracing-layer-slack v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.29s
[INFO] running `Command { std: "docker" "inspect" "be5ec0eecbc47f336f6fd47d1c6d99249f661713cd04a667c5b0895c3efdf8db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be5ec0eecbc47f336f6fd47d1c6d99249f661713cd04a667c5b0895c3efdf8db", kill_on_drop: false }`
[INFO] [stdout] be5ec0eecbc47f336f6fd47d1c6d99249f661713cd04a667c5b0895c3efdf8db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fe160bf93b6499c882fcf999716d20645fbd3a7da03a9fef9e378a09e02c740
[INFO] running `Command { std: "docker" "start" "-a" "3fe160bf93b6499c882fcf999716d20645fbd3a7da03a9fef9e378a09e02c740", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-layer-slack v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.61s
[INFO] running `Command { std: "docker" "inspect" "3fe160bf93b6499c882fcf999716d20645fbd3a7da03a9fef9e378a09e02c740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe160bf93b6499c882fcf999716d20645fbd3a7da03a9fef9e378a09e02c740", kill_on_drop: false }`
[INFO] [stdout] 3fe160bf93b6499c882fcf999716d20645fbd3a7da03a9fef9e378a09e02c740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05f4bb4222f0633698fb4755ae39cf55c64efbd9f41285e1ebf991f7fb2c684a
[INFO] running `Command { std: "docker" "start" "-a" "05f4bb4222f0633698fb4755ae39cf55c64efbd9f41285e1ebf991f7fb2c684a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tracing_layer_slack-6789b86106183152)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tracing_layer_slack
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 27) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 27) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'slack webhook url in env: NotPresent', src/config.rs:33:48
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55c77fc2ec20 - std::backtrace_rs::backtrace::libunwind::trace::h34055254b57d8e79
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x55c77fc2ec20 - std::backtrace_rs::backtrace::trace_unsynchronized::h8f1e3fbd9afff6ec
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55c77fc2ec20 - std::sys_common::backtrace::_print_fmt::h3a99a796b770c360
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55c77fc2ec20 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h32d1f94a80615d18
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x55c77fc4ecec - core::fmt::write::h306731c068f7162c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/fmt/mod.rs:1110:17
[INFO] [stdout]    5:     0x55c77fc29ba5 - std::io::Write::write_fmt::hd2fa90334eee2a21
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/io/mod.rs:1588:15
[INFO] [stdout]    6:     0x55c77fc30c1b - std::sys_common::backtrace::_print::h5abaa2601a852287
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x55c77fc30c1b - std::sys_common::backtrace::print::h8d81445442bb638f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x55c77fc30c1b - std::panicking::default_hook::{{closure}}::hcfe804496a9fa747
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x55c77fc306f1 - std::panicking::default_hook::hbea8e3ccf2ba8901
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:225:9
[INFO] [stdout]   10:     0x55c77fc312e4 - std::panicking::rust_panic_with_hook::h7ee9e1a2d0f8975a
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x55c77fc30dc7 - std::panicking::begin_panic_handler::{{closure}}::h8ab3b4491718b2c7
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x55c77fc2f11c - std::sys_common::backtrace::__rust_end_short_backtrace::hd489062ffa586a9f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x55c77fc30d29 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x55c77f404671 - core::panicking::panic_fmt::hca6330e3e14086b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x55c77f404763 - core::result::unwrap_failed::h6160d2b4bfbb0e87
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/result.rs:1355:5
[INFO] [stdout]   16:     0x55c77f42e86f - core::result::Result<T,E>::expect::hb35a4a6a46a3cd22
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/result.rs:997:23
[INFO] [stdout]   17:     0x55c77f42f543 - tracing_layer_slack::config::SlackConfig::new_from_env::had9ea6a9b17dea37
[INFO] [stdout]                                at /opt/rustwide/workdir/src/config.rs:33:13
[INFO] [stdout]   18:     0x55c77f4327b1 - core::ops::function::FnOnce::call_once::h9c2c6c896f648aff
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   19:     0x55c77f42c393 - core::option::Option<T>::unwrap_or_else::h5a9a1e800a5a9423
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/option.rs:429:21
[INFO] [stdout]   20:     0x55c77f43000e - tracing_layer_slack::layer::SlackLayerBuilder::build::h525aceef33827aa4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/layer.rs:155:13
[INFO] [stdout]   21:     0x55c77f426161 - rust_out::main::{{closure}}::h2357000680d1533a
[INFO] [stdout]   22:     0x55c77f41f80c - <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::ha7ad57ae2829b2a7
[INFO] [stdout]   23:     0x55c77f415b4c - tokio::park::thread::CachedParkThread::block_on::{{closure}}::h571c73febea318f3
[INFO] [stdout]   24:     0x55c77f414f43 - tokio::coop::with_budget::{{closure}}::h93e9c5d8aee0dd91
[INFO] [stdout]   25:     0x55c77f40f546 - std::thread::local::LocalKey<T>::try_with::hc2a313b09dd27e5c
[INFO] [stdout]   26:     0x55c77f40efc8 - std::thread::local::LocalKey<T>::with::hd60399cc5edff7a7
[INFO] [stdout]   27:     0x55c77f4159c5 - tokio::park::thread::CachedParkThread::block_on::hf2ad03f4f80f2e15
[INFO] [stdout]   28:     0x55c77f417d26 - tokio::runtime::enter::Enter::block_on::haa41ff31fe48f896
[INFO] [stdout]   29:     0x55c77f41651b - tokio::runtime::thread_pool::ThreadPool::block_on::h9634385c433e2241
[INFO] [stdout]   30:     0x55c77f417ebc - tokio::runtime::Runtime::block_on::h19adad89f4317397
[INFO] [stdout]   31:     0x55c77f425f01 - rust_out::main::h2a38bb51b9580a7d
[INFO] [stdout]   32:     0x55c77f40fe63 - core::ops::function::FnOnce::call_once::hb73b95e6982fd3f0
[INFO] [stdout]   33:     0x55c77f40ec39 - std::sys_common::backtrace::__rust_begin_short_backtrace::h8371d112165838d3
[INFO] [stdout]   34:     0x55c77f40ee09 - std::rt::lang_start::{{closure}}::h783adf50233ec5ec
[INFO] [stdout]   35:     0x55c77fc317e9 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2aabc384aab89b7b
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:259:13
[INFO] [stdout]   36:     0x55c77fc317e9 - std::panicking::try::do_call::hc5fcacb7a85fc7b1
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stdout]   37:     0x55c77fc317e9 - std::panicking::try::hb5d9603af3abbe3a
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stdout]   38:     0x55c77fc317e9 - std::panic::catch_unwind::h98fe6ac3925e64b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stdout]   39:     0x55c77fc317e9 - std::rt::lang_start_internal::h22ac7383c516f93e
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/rt.rs:34:21
[INFO] [stdout]   40:     0x55c77f40edf1 - std::rt::lang_start::h11b9716471e37ff8
[INFO] [stdout]   41:     0x55c77f4264b3 - main
[INFO] [stdout]   42:     0x7f69d12510b3 - __libc_start_main
[INFO] [stdout]   43:     0x55c77f404e6e - _start
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 27)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.22s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "05f4bb4222f0633698fb4755ae39cf55c64efbd9f41285e1ebf991f7fb2c684a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05f4bb4222f0633698fb4755ae39cf55c64efbd9f41285e1ebf991f7fb2c684a", kill_on_drop: false }`
[INFO] [stdout] 05f4bb4222f0633698fb4755ae39cf55c64efbd9f41285e1ebf991f7fb2c684a
