[INFO] cloning repository https://github.com/eduardosm/rust-fpmath
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eduardosm/rust-fpmath" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feduardosm%2Frust-fpmath", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feduardosm%2Frust-fpmath'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8745d1407f1603f4f219bac7eaca27785f0f4c01
[INFO] checking eduardosm/rust-fpmath against d8df82673d5911b6112a85bf91d9adefb2c66a1a for pr-162242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feduardosm%2Frust-fpmath" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eduardosm/rust-fpmath
[INFO] finished tweaking git repo https://github.com/eduardosm/rust-fpmath
[INFO] tweaked toml for git repo https://github.com/eduardosm/rust-fpmath written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eduardosm/rust-fpmath on toolchain d8df82673d5911b6112a85bf91d9adefb2c66a1a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8df82673d5911b6112a85bf91d9adefb2c66a1a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eduardosm/rust-fpmath 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" "+d8df82673d5911b6112a85bf91d9adefb2c66a1a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_pcg v0.10.1
[INFO] [stderr]   Downloaded rug v1.29.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf
[INFO] running `Command { std: "docker" "start" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf" "/opt/rustwide/cargo-home/bin/cargo" "+d8df82673d5911b6112a85bf91d9adefb2c66a1a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf" "/opt/rustwide/cargo-home/bin/cargo" "+d8df82673d5911b6112a85bf91d9adefb2c66a1a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.7.0
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling rug v1.29.0
[INFO] [stderr]     Checking az v1.3.0
[INFO] [stderr]     Checking fpmath v0.2.0-pre (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_pcg v0.10.1
[INFO] [stderr]     Checking rand v0.10.0
[INFO] [stdout] warning: an associated constant with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/f32/mod.rs:31:40
[INFO] [stdout]    |
[INFO] [stdout] 31 |     const SIGN_MASK: Self::Raw = 1 << (Self::BITS - 1);
[INFO] [stdout]    |                                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: use the fully qualified path to the associated const
[INFO] [stdout]    |
[INFO] [stdout] 31 -     const SIGN_MASK: Self::Raw = 1 << (Self::BITS - 1);
[INFO] [stdout] 31 +     const SIGN_MASK: Self::Raw = 1 << (<f32 as traits::Float>::BITS - 1);
[INFO] [stdout]    |
[INFO] [stdout] help: add `#![feature(float_bits_const)]` to the crate attributes to enable `core::f32::<impl f32>::BITS`
[INFO] [stdout]   --> src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 + #![feature(float_bits_const)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated constant with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/f64/mod.rs:31:40
[INFO] [stdout]    |
[INFO] [stdout] 31 |     const SIGN_MASK: Self::Raw = 1 << (Self::BITS - 1);
[INFO] [stdout]    |                                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout] help: use the fully qualified path to the associated const
[INFO] [stdout]    |
[INFO] [stdout] 31 -     const SIGN_MASK: Self::Raw = 1 << (Self::BITS - 1);
[INFO] [stdout] 31 +     const SIGN_MASK: Self::Raw = 1 << (<f64 as traits::Float>::BITS - 1);
[INFO] [stdout]    |
[INFO] [stdout] help: add `#![feature(float_bits_const)]` to the crate attributes to enable `core::f64::<impl f64>::BITS`
[INFO] [stdout]   --> src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 + #![feature(float_bits_const)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf", kill_on_drop: false }`
[INFO] [stdout] e200364e9e8c178d5f9b74ffd6ab1188f9cb7746bff3e14ab1cc14a86c7ea1bf