[INFO] fetching crate fast-float 0.2.0...
[INFO] checking fast-float-0.2.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate fast-float 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate fast-float 0.2.0
[INFO] finished tweaking crates.io crate fast-float 0.2.0
[INFO] tweaked toml for crates.io crate fast-float 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fast-float 0.2.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding fastrand v1.9.0 (available: v2.3.0)
[INFO] [stderr]       Adding hexf-parse v0.1.0 (available: v0.2.1)
[INFO] [stderr]       Adding lexical-core v0.7.6 (available: v1.0.5)
[INFO] [stderr]       Adding num-bigint v0.3.3 (available: v0.4.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8490e4e877d83fa7e8f45b8e700049fad513e6580c5e4700cadde327ba07c123
[INFO] running `Command { std: "docker" "start" "-a" "8490e4e877d83fa7e8f45b8e700049fad513e6580c5e4700cadde327ba07c123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8490e4e877d83fa7e8f45b8e700049fad513e6580c5e4700cadde327ba07c123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8490e4e877d83fa7e8f45b8e700049fad513e6580c5e4700cadde327ba07c123", kill_on_drop: false }`
[INFO] [stdout] 8490e4e877d83fa7e8f45b8e700049fad513e6580c5e4700cadde327ba07c123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1dca6bc52dfe7d576ac23cc4e7463a9bb7f098e6d86e9071f85eb99a62fea6da
[INFO] running `Command { std: "docker" "start" "-a" "1dca6bc52dfe7d576ac23cc4e7463a9bb7f098e6d86e9071f85eb99a62fea6da", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking hexf-parse v0.1.0
[INFO] [stderr]     Checking fast-float v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `skip_chars2` is never used
[INFO] [stdout]    --> src/common.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub trait ByteSlice: AsRef<[u8]> + AsMut<[u8]> {
[INFO] [stdout]     |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn skip_chars2(&self, c1: u8, c2: u8) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> tests/test_random.rs:10:31
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let a: f64 = unsafe { core::mem::transmute(i) };
[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]  --> tests/test_exhaustive.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let a: f32 = unsafe { core::mem::transmute(i) };
[INFO] [stdout]   |                               --------------------^^^
[INFO] [stdout]   |                               |
[INFO] [stdout]   |                               help: replace this with: `f32::from_bits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `skip_chars2` is never used
[INFO] [stdout]    --> src/common.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub trait ByteSlice: AsRef<[u8]> + AsMut<[u8]> {
[INFO] [stdout]     |           --------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn skip_chars2(&self, c1: u8, c2: u8) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.59s
[INFO] running `Command { std: "docker" "inspect" "1dca6bc52dfe7d576ac23cc4e7463a9bb7f098e6d86e9071f85eb99a62fea6da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dca6bc52dfe7d576ac23cc4e7463a9bb7f098e6d86e9071f85eb99a62fea6da", kill_on_drop: false }`
[INFO] [stdout] 1dca6bc52dfe7d576ac23cc4e7463a9bb7f098e6d86e9071f85eb99a62fea6da