[INFO] fetching crate jiao 0.4.1...
[INFO] testing jiao-0.4.1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate jiao 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate jiao 0.4.1
[INFO] finished tweaking crates.io crate jiao 0.4.1
[INFO] tweaked toml for crates.io crate jiao 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate jiao 0.4.1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding bit-set v0.5.3 (available: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03639fe3d94de360df04951c7b31815ff4f2c4e35c657edaed6c9f05828e6601
[INFO] running `Command { std: "docker" "start" "-a" "03639fe3d94de360df04951c7b31815ff4f2c4e35c657edaed6c9f05828e6601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03639fe3d94de360df04951c7b31815ff4f2c4e35c657edaed6c9f05828e6601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03639fe3d94de360df04951c7b31815ff4f2c4e35c657edaed6c9f05828e6601", kill_on_drop: false }`
[INFO] [stdout] 03639fe3d94de360df04951c7b31815ff4f2c4e35c657edaed6c9f05828e6601
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5ca2d5d3146b1dc5ea422fae8ae5f3c4934c847e5e69c31fb6136be1f24412b
[INFO] running `Command { std: "docker" "start" "-a" "d5ca2d5d3146b1dc5ea422fae8ae5f3c4934c847e5e69c31fb6136be1f24412b", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling jiao v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/core/scalar.rs:247:5
[INFO] [stdout]     |
[INFO] [stdout] 247 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:18:5
[INFO] [stdout]     |
[INFO] [stdout]  18 |     warnings,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_attributes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jiao` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d5ca2d5d3146b1dc5ea422fae8ae5f3c4934c847e5e69c31fb6136be1f24412b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ca2d5d3146b1dc5ea422fae8ae5f3c4934c847e5e69c31fb6136be1f24412b", kill_on_drop: false }`
[INFO] [stdout] d5ca2d5d3146b1dc5ea422fae8ae5f3c4934c847e5e69c31fb6136be1f24412b