[INFO] fetching crate dtoa 1.0.10...
[INFO] checking dtoa-1.0.10 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate dtoa 1.0.10 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate dtoa 1.0.10
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dtoa 1.0.10
[INFO] tweaked toml for crates.io crate dtoa 1.0.10 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dtoa 1.0.10 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate dtoa 1.0.10 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4fb40d3d2cf44145ba06d0c3b99868011aec3f1ffb2a486999f31657215684a
[INFO] running `Command { std: "docker" "start" "-a" "d4fb40d3d2cf44145ba06d0c3b99868011aec3f1ffb2a486999f31657215684a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4fb40d3d2cf44145ba06d0c3b99868011aec3f1ffb2a486999f31657215684a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4fb40d3d2cf44145ba06d0c3b99868011aec3f1ffb2a486999f31657215684a", kill_on_drop: false }`
[INFO] [stdout] d4fb40d3d2cf44145ba06d0c3b99868011aec3f1ffb2a486999f31657215684a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c90f824d51e9904072340c7eeeff6c6cb817191e4b0e863650c933a500438d02
[INFO] running `Command { std: "docker" "start" "-a" "c90f824d51e9904072340c7eeeff6c6cb817191e4b0e863650c933a500438d02", kill_on_drop: false }`
[INFO] [stderr]     Checking dtoa v1.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/diyfp.rs:141:37
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   let u: $mask_type = mem::transmute(d);
[INFO] [stdout]     |                                       --------------^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: replace this with: `f32::to_bits`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 | /         dtoa! {
[INFO] [stdout] 198 | |             floating_type: f32,
[INFO] [stdout] 199 | |             significand_type: u32,
[INFO] [stdout] 200 | |             exponent_type: i32,
[INFO] [stdout] ...   |
[INFO] [stdout] 211 | |             min_power: (-36),
[INFO] [stdout] 212 | |         };
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `diyfp` which comes from the expansion of the macro `dtoa` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/diyfp.rs:141:37
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   let u: $mask_type = mem::transmute(d);
[INFO] [stdout]     |                                       --------------^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: replace this with: `f64::to_bits`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 | /         dtoa! {
[INFO] [stdout] 244 | |             floating_type: f64,
[INFO] [stdout] 245 | |             significand_type: u64,
[INFO] [stdout] 246 | |             exponent_type: isize,
[INFO] [stdout] ...   |
[INFO] [stdout] 257 | |             min_power: (-348),
[INFO] [stdout] 258 | |         };
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `diyfp` which comes from the expansion of the macro `dtoa` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/diyfp.rs:141:37
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   let u: $mask_type = mem::transmute(d);
[INFO] [stdout]     |                                       --------------^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: replace this with: `f32::to_bits`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 | /         dtoa! {
[INFO] [stdout] 198 | |             floating_type: f32,
[INFO] [stdout] 199 | |             significand_type: u32,
[INFO] [stdout] 200 | |             exponent_type: i32,
[INFO] [stdout] ...   |
[INFO] [stdout] 211 | |             min_power: (-36),
[INFO] [stdout] 212 | |         };
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `diyfp` which comes from the expansion of the macro `dtoa` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/diyfp.rs:141:37
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   let u: $mask_type = mem::transmute(d);
[INFO] [stdout]     |                                       --------------^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: replace this with: `f64::to_bits`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 | /         dtoa! {
[INFO] [stdout] 244 | |             floating_type: f64,
[INFO] [stdout] 245 | |             significand_type: u64,
[INFO] [stdout] 246 | |             exponent_type: isize,
[INFO] [stdout] ...   |
[INFO] [stdout] 257 | |             min_power: (-348),
[INFO] [stdout] 258 | |         };
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `diyfp` which comes from the expansion of the macro `dtoa` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "c90f824d51e9904072340c7eeeff6c6cb817191e4b0e863650c933a500438d02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90f824d51e9904072340c7eeeff6c6cb817191e4b0e863650c933a500438d02", kill_on_drop: false }`
[INFO] [stdout] c90f824d51e9904072340c7eeeff6c6cb817191e4b0e863650c933a500438d02