[INFO] fetching crate fixed-sqrt 0.2.5...
[INFO] checking fixed-sqrt-0.2.5 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate fixed-sqrt 0.2.5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate fixed-sqrt 0.2.5 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate fixed-sqrt 0.2.5
[INFO] finished tweaking crates.io crate fixed-sqrt 0.2.5
[INFO] tweaked toml for crates.io crate fixed-sqrt 0.2.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate fixed-sqrt 0.2.5 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded integer-sqrt v0.1.5
[INFO] [stderr]   Downloaded bytemuck v1.9.1
[INFO] [stderr]   Downloaded az v1.2.0
[INFO] [stderr]   Downloaded fixed v1.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51cdd970998a7f69ab96b9afb19f81a81ec8f2bb895b5fe7649e99b9fd01945f
[INFO] running `Command { std: "docker" "start" "-a" "51cdd970998a7f69ab96b9afb19f81a81ec8f2bb895b5fe7649e99b9fd01945f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51cdd970998a7f69ab96b9afb19f81a81ec8f2bb895b5fe7649e99b9fd01945f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51cdd970998a7f69ab96b9afb19f81a81ec8f2bb895b5fe7649e99b9fd01945f", kill_on_drop: false }`
[INFO] [stdout] 51cdd970998a7f69ab96b9afb19f81a81ec8f2bb895b5fe7649e99b9fd01945f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fdb1b8bdf34ac95473ef21139c9e6f4e91da223779a6663a542f7bf65afc6bf
[INFO] running `Command { std: "docker" "start" "-a" "8fdb1b8bdf34ac95473ef21139c9e6f4e91da223779a6663a542f7bf65afc6bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling az v1.2.0
[INFO] [stderr]    Compiling fixed v1.15.0
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking fixed-sqrt v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `fixed`, `sqrt`, and `exact` are never read
[INFO] [stdout]   --> examples/errors.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct MaxErr <F : Fixed> {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 20 |   pub fixed   : F,
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 21 |   pub sqrt    : F,
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 22 |   pub exact   : f64,
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MaxErr` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.94s
[INFO] running `Command { std: "docker" "inspect" "8fdb1b8bdf34ac95473ef21139c9e6f4e91da223779a6663a542f7bf65afc6bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fdb1b8bdf34ac95473ef21139c9e6f4e91da223779a6663a542f7bf65afc6bf", kill_on_drop: false }`
[INFO] [stdout] 8fdb1b8bdf34ac95473ef21139c9e6f4e91da223779a6663a542f7bf65afc6bf