[INFO] fetching crate chemcore 0.4.1...
[INFO] checking chemcore-0.4.1 against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] extracting crate chemcore 0.4.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate chemcore 0.4.1 on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chemcore 0.4.1
[INFO] finished tweaking crates.io crate chemcore 0.4.1
[INFO] tweaked toml for crates.io crate chemcore 0.4.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding pretty_assertions v0.6.1 (available: v1.4.1)
[INFO] [stderr]       Adding purr v0.8.0 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43b551f366d3fc14617e5d255a43954e5b952e918eda9733f333b6960fbcf9be
[INFO] running `Command { std: "docker" "start" "-a" "43b551f366d3fc14617e5d255a43954e5b952e918eda9733f333b6960fbcf9be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43b551f366d3fc14617e5d255a43954e5b952e918eda9733f333b6960fbcf9be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43b551f366d3fc14617e5d255a43954e5b952e918eda9733f333b6960fbcf9be", kill_on_drop: false }`
[INFO] [stdout] 43b551f366d3fc14617e5d255a43954e5b952e918eda9733f333b6960fbcf9be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83e3b433a8519b77a5bbc403c97448dbbe631be9921e688ff0db13491257bcbb
[INFO] running `Command { std: "docker" "start" "-a" "83e3b433a8519b77a5bbc403c97448dbbe631be9921e688ff0db13491257bcbb", kill_on_drop: false }`
[INFO] [stderr]     Checking gamma v0.9.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking purr v0.8.0
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking chemcore v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this conversion is useless `u8` to `u8`
[INFO] [stdout]    --> src/molecule/element.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         result.into()
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chemcore` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this conversion is useless `u8` to `u8`
[INFO] [stdout]    --> src/molecule/element.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         result.into()
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chemcore` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "83e3b433a8519b77a5bbc403c97448dbbe631be9921e688ff0db13491257bcbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e3b433a8519b77a5bbc403c97448dbbe631be9921e688ff0db13491257bcbb", kill_on_drop: false }`
[INFO] [stdout] 83e3b433a8519b77a5bbc403c97448dbbe631be9921e688ff0db13491257bcbb