[INFO] fetching crate rslack 0.5.2...
[INFO] checking rslack-0.5.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rslack 0.5.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rslack 0.5.2
[INFO] finished tweaking crates.io crate rslack 0.5.2
[INFO] tweaked toml for crates.io crate rslack 0.5.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rslack 0.5.2 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rslack 0.5.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8482a6c40f66139a31b727e16b1ba16f0450f4d10f536c67cf8eb3aedd1a7c1
[INFO] running `Command { std: "docker" "start" "-a" "a8482a6c40f66139a31b727e16b1ba16f0450f4d10f536c67cf8eb3aedd1a7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8482a6c40f66139a31b727e16b1ba16f0450f4d10f536c67cf8eb3aedd1a7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8482a6c40f66139a31b727e16b1ba16f0450f4d10f536c67cf8eb3aedd1a7c1", kill_on_drop: false }`
[INFO] [stdout] a8482a6c40f66139a31b727e16b1ba16f0450f4d10f536c67cf8eb3aedd1a7c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 235b436fcf612562c591717654f276d0cd4175454c0b11206ea45ff980e1568e
[INFO] running `Command { std: "docker" "start" "-a" "235b436fcf612562c591717654f276d0cd4175454c0b11206ea45ff980e1568e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking pin-project-lite v0.2.12
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bytes v1.9.0
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling cc v1.2.16
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking mio v1.0.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking writeable v0.5.5
[INFO] [stderr]     Checking litemap v0.7.3
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking icu_locid_transform_data v1.5.0
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]    Compiling openssl v0.10.72
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking icu_properties_data v1.5.0
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking write16 v1.0.0
[INFO] [stderr]    Compiling syn v1.0.104
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking utf16_iter v1.0.5
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking icu_normalizer_data v1.5.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking base64 v0.22.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling zerocopy v0.8.22
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking numtoa v0.2.4
[INFO] [stderr]     Checking rpos v0.3.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking sdd v0.2.0
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking similar v2.2.1
[INFO] [stderr]     Checking termion v4.0.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking scc v2.1.0
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking indexmap v2.2.5
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex v1.7.3
[INFO] [stderr]    Compiling openssl-sys v0.9.107
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling zerofrom-derive v0.1.4
[INFO] [stderr]    Compiling yoke-derive v0.7.4
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serial_test_derive v3.2.0
[INFO] [stderr]     Checking serial_test v3.2.0
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking zerofrom v0.1.4
[INFO] [stderr]     Checking yoke v0.7.4
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tower v0.5.2
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tower-http v0.6.5
[INFO] [stderr]     Checking h2 v0.4.3
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking assert-json-diff v2.0.2
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking hyper-util v0.1.13
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking mockito v1.7.0
[INFO] [stderr]     Checking reqwest v0.12.20
[INFO] [stderr]     Checking rslack v0.5.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/option/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | /     #[structopt(short, long, default_value = "")]
[INFO] [stdout] 7 | |     pub channel: String,
[INFO] [stdout]   | |_______________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/option/mod.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     #[structopt(short, long, default_value = "")]
[INFO] [stdout] 10 | |     pub message: String,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/option/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | /     #[structopt(short, long, default_value = "")]
[INFO] [stdout] 7 | |     pub channel: String,
[INFO] [stdout]   | |_______________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/option/mod.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     #[structopt(short, long, default_value = "")]
[INFO] [stdout] 10 | |     pub message: String,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rslack` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rslack` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "235b436fcf612562c591717654f276d0cd4175454c0b11206ea45ff980e1568e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "235b436fcf612562c591717654f276d0cd4175454c0b11206ea45ff980e1568e", kill_on_drop: false }`
[INFO] [stdout] 235b436fcf612562c591717654f276d0cd4175454c0b11206ea45ff980e1568e
