[INFO] fetching crate fw_env 0.1.0...
[INFO] checking fw_env-0.1.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate fw_env 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate fw_env 0.1.0
[INFO] finished tweaking crates.io crate fw_env 0.1.0
[INFO] tweaked toml for crates.io crate fw_env 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fw_env 0.1.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding crc v1.8.1 (available: v3.3.0)
[INFO] [stderr]       Adding scan_fmt v0.1.3 (available: v0.2.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded build_const v0.2.2
[INFO] [stderr]   Downloaded scan_fmt v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28528a6d88aa31b289c1d51bde1e5d24971c870db82da9baa336a5730d109773
[INFO] running `Command { std: "docker" "start" "-a" "28528a6d88aa31b289c1d51bde1e5d24971c870db82da9baa336a5730d109773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28528a6d88aa31b289c1d51bde1e5d24971c870db82da9baa336a5730d109773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28528a6d88aa31b289c1d51bde1e5d24971c870db82da9baa336a5730d109773", kill_on_drop: false }`
[INFO] [stdout] 28528a6d88aa31b289c1d51bde1e5d24971c870db82da9baa336a5730d109773
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab27b33ec1276d3cd6a88507163cf04ad30539f0d10958dd39d741169d0c49c5
[INFO] running `Command { std: "docker" "start" "-a" "ab27b33ec1276d3cd6a88507163cf04ad30539f0d10958dd39d741169d0c49c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking fw_env v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let refcrc: u32 = unsafe { std::mem::transmute([block[0], block[1], block[2], block[3]]) };
[INFO] [stdout]     |                                    -------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: replace this with: `u32::from_ne_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let refcrc: u32 = unsafe { std::mem::transmute([block[0], block[1], block[2], block[3]]) };
[INFO] [stdout]     |                                    -------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: replace this with: `u32::from_ne_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `Command { std: "docker" "inspect" "ab27b33ec1276d3cd6a88507163cf04ad30539f0d10958dd39d741169d0c49c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab27b33ec1276d3cd6a88507163cf04ad30539f0d10958dd39d741169d0c49c5", kill_on_drop: false }`
[INFO] [stdout] ab27b33ec1276d3cd6a88507163cf04ad30539f0d10958dd39d741169d0c49c5
