[INFO] fetching crate rgb 0.8.29...
[INFO] checking rgb-0.8.29 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate rgb 0.8.29 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate rgb 0.8.29 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rgb 0.8.29
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rgb 0.8.29
[INFO] tweaked toml for crates.io crate rgb 0.8.29 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate rgb 0.8.29 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 574b192039d172751e3fd659159d864f82d1a89feb570f7246a05ce5923121a4
[INFO] running `Command { std: "docker" "start" "-a" "574b192039d172751e3fd659159d864f82d1a89feb570f7246a05ce5923121a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "574b192039d172751e3fd659159d864f82d1a89feb570f7246a05ce5923121a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "574b192039d172751e3fd659159d864f82d1a89feb570f7246a05ce5923121a4", kill_on_drop: false }`
[INFO] [stdout] 574b192039d172751e3fd659159d864f82d1a89feb570f7246a05ce5923121a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c168e2f1f3d957376b024080944d3aee4162a0744273efa10a0b937120d681b6
[INFO] running `Command { std: "docker" "start" "-a" "c168e2f1f3d957376b024080944d3aee4162a0744273efa10a0b937120d681b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking rgb v0.8.29 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]    --> src/alt.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     #[inline(always)]
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^ help: remove this attribute
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] note: attribute also specified here
[INFO] [stdout]    --> src/alt.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 184 |     #[inline(always)]
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]    --> src/alt.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     #[inline(always)]
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^ help: remove this attribute
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] note: attribute also specified here
[INFO] [stdout]    --> src/alt.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 184 |     #[inline(always)]
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.36s
[INFO] running `Command { std: "docker" "inspect" "c168e2f1f3d957376b024080944d3aee4162a0744273efa10a0b937120d681b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c168e2f1f3d957376b024080944d3aee4162a0744273efa10a0b937120d681b6", kill_on_drop: false }`
[INFO] [stdout] c168e2f1f3d957376b024080944d3aee4162a0744273efa10a0b937120d681b6