[INFO] fetching crate x86_64 0.15.4...
[INFO] checking x86_64-0.15.4 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate x86_64 0.15.4 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate x86_64 0.15.4
[INFO] finished tweaking crates.io crate x86_64 0.15.4
[INFO] tweaked toml for crates.io crate x86_64 0.15.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate x86_64 0.15.4 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 x86_64 0.15.4 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] 8b5f5600b4313f9a5059a7db406686f624cd27ba59b7337a639a977ad1aad270
[INFO] running `Command { std: "docker" "start" "-a" "8b5f5600b4313f9a5059a7db406686f624cd27ba59b7337a639a977ad1aad270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b5f5600b4313f9a5059a7db406686f624cd27ba59b7337a639a977ad1aad270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b5f5600b4313f9a5059a7db406686f624cd27ba59b7337a639a977ad1aad270", kill_on_drop: false }`
[INFO] [stdout] 8b5f5600b4313f9a5059a7db406686f624cd27ba59b7337a639a977ad1aad270
[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] 82c2f8f43fe143341689de1d11da1b596d90689c3c66b7d94ca428c07f8ed8bd
[INFO] running `Command { std: "docker" "start" "-a" "82c2f8f43fe143341689de1d11da1b596d90689c3c66b7d94ca428c07f8ed8bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_fn v0.4.11
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]     Checking x86_64 v0.15.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/instructions/random.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(0x1) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/instructions/smap.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(7) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/instructions/tlb.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(0x8000_0008) };
[INFO] [stdout]     |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/instructions/tlb.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(0x8000_000a) };
[INFO] [stdout]     |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/instructions/random.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(0x1) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/instructions/smap.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(7) };
[INFO] [stdout]    |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/instructions/tlb.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(0x8000_0008) };
[INFO] [stdout]     |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/instructions/tlb.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let cpuid = unsafe { core::arch::x86_64::__cpuid(0x8000_000a) };
[INFO] [stdout]     |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "82c2f8f43fe143341689de1d11da1b596d90689c3c66b7d94ca428c07f8ed8bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82c2f8f43fe143341689de1d11da1b596d90689c3c66b7d94ca428c07f8ed8bd", kill_on_drop: false }`
[INFO] [stdout] 82c2f8f43fe143341689de1d11da1b596d90689c3c66b7d94ca428c07f8ed8bd
