[INFO] fetching crate unsafe_math 0.1.1...
[INFO] checking unsafe_math-0.1.1 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate unsafe_math 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate unsafe_math 0.1.1
[INFO] finished tweaking crates.io crate unsafe_math 0.1.1
[INFO] tweaked toml for crates.io crate unsafe_math 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unsafe_math 0.1.1 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unsafe_math 0.1.1 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45a3d83edc6e7bc2ebd047776d6cadebd24021d9107de09ea901f4df0b9d0c6d
[INFO] running `Command { std: "docker" "start" "-a" "45a3d83edc6e7bc2ebd047776d6cadebd24021d9107de09ea901f4df0b9d0c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45a3d83edc6e7bc2ebd047776d6cadebd24021d9107de09ea901f4df0b9d0c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45a3d83edc6e7bc2ebd047776d6cadebd24021d9107de09ea901f4df0b9d0c6d", kill_on_drop: false }`
[INFO] [stdout] 45a3d83edc6e7bc2ebd047776d6cadebd24021d9107de09ea901f4df0b9d0c6d
[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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98a022b16a7a07239b569e3f41291492d7ee684673c22fcbdc222371377164b3
[INFO] running `Command { std: "docker" "start" "-a" "98a022b16a7a07239b569e3f41291492d7ee684673c22fcbdc222371377164b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling unsafe_math_trait v0.1.1
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling unsafe_math_macro v0.1.1
[INFO] [stderr]     Checking unsafe_math v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: feature `stmt_expr_attributes` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.09s
[INFO] running `Command { std: "docker" "inspect" "98a022b16a7a07239b569e3f41291492d7ee684673c22fcbdc222371377164b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98a022b16a7a07239b569e3f41291492d7ee684673c22fcbdc222371377164b3", kill_on_drop: false }`
[INFO] [stdout] 98a022b16a7a07239b569e3f41291492d7ee684673c22fcbdc222371377164b3