[INFO] fetching crate const-frac 0.0.4...
[INFO] checking const-frac-0.0.4 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate const-frac 0.0.4 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate const-frac 0.0.4
[INFO] finished tweaking crates.io crate const-frac 0.0.4
[INFO] tweaked toml for crates.io crate const-frac 0.0.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate const-frac 0.0.4 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.104)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0aa153a3eefd0691c2503ceca5c98577347582bd9542a8d88b85951511a8cf70
[INFO] running `Command { std: "docker" "start" "-a" "0aa153a3eefd0691c2503ceca5c98577347582bd9542a8d88b85951511a8cf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0aa153a3eefd0691c2503ceca5c98577347582bd9542a8d88b85951511a8cf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aa153a3eefd0691c2503ceca5c98577347582bd9542a8d88b85951511a8cf70", kill_on_drop: false }`
[INFO] [stdout] 0aa153a3eefd0691c2503ceca5c98577347582bd9542a8d88b85951511a8cf70
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df4f668f6a2779af0ba40accfcc12bd1150226428292245b51aab379838bba87
[INFO] running `Command { std: "docker" "start" "-a" "df4f668f6a2779af0ba40accfcc12bd1150226428292245b51aab379838bba87", kill_on_drop: false }`
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking gcd v2.3.0
[INFO] [stderr]     Checking combine v4.6.7
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking const-frac v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/frac/div.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 |     unsafe { mem::transmute(sign | exp2 | mantissa) }
[INFO] [stdout]    |              --------------^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: replace this with: `f64::from_bits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/frac/div.rs:36:30
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let bits: u64 = unsafe { mem::transmute(d) };
[INFO] [stdout]    |                              --------------^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: replace this with: `f64::to_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/frac/div.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 |     unsafe { mem::transmute(sign | exp2 | mantissa) }
[INFO] [stdout]    |              --------------^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: replace this with: `f64::from_bits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/frac/div.rs:36:30
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let bits: u64 = unsafe { mem::transmute(d) };
[INFO] [stdout]    |                              --------------^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: replace this with: `f64::to_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.92s
[INFO] running `Command { std: "docker" "inspect" "df4f668f6a2779af0ba40accfcc12bd1150226428292245b51aab379838bba87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df4f668f6a2779af0ba40accfcc12bd1150226428292245b51aab379838bba87", kill_on_drop: false }`
[INFO] [stdout] df4f668f6a2779af0ba40accfcc12bd1150226428292245b51aab379838bba87