[INFO] fetching crate msgpack_simple 1.0.2...
[INFO] checking msgpack_simple-1.0.2 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate msgpack_simple 1.0.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate msgpack_simple 1.0.2
[INFO] finished tweaking crates.io crate msgpack_simple 1.0.2
[INFO] tweaked toml for crates.io crate msgpack_simple 1.0.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate msgpack_simple 1.0.2 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding hex v0.3.2 (available: v0.4.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 030796569a67773187f81ba59fbf379924ccf2731ae8f0a5c6118cf4c7268649
[INFO] running `Command { std: "docker" "start" "-a" "030796569a67773187f81ba59fbf379924ccf2731ae8f0a5c6118cf4c7268649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "030796569a67773187f81ba59fbf379924ccf2731ae8f0a5c6118cf4c7268649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030796569a67773187f81ba59fbf379924ccf2731ae8f0a5c6118cf4c7268649", kill_on_drop: false }`
[INFO] [stdout] 030796569a67773187f81ba59fbf379924ccf2731ae8f0a5c6118cf4c7268649
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f82366a2717306979502936677e0fcbf438bee68b76e737f88d99ca129431aa
[INFO] running `Command { std: "docker" "start" "-a" "4f82366a2717306979502936677e0fcbf438bee68b76e737f88d99ca129431aa", kill_on_drop: false }`
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking msgpack_simple v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:364:40
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     let raw = unsafe { std::mem::transmute::<i8, u8>(value as i8) };
[INFO] [stdout]     |                                        -----------------------------^^^^^^^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        help: replace this with: `i8::cast_unsigned`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:412:42
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let int_value = unsafe { std::mem::transmute::<f64, u64>(*value) };
[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/lib.rs:462:40
[INFO] [stdout]     |
[INFO] [stdout] 462 |                 let type_id = unsafe { std::mem::transmute::<i8, u8>(extension.type_id) };
[INFO] [stdout]     |                                        -----------------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        help: replace this with: `i8::cast_unsigned`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:105:32
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[2]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:116:32
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[3]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[5]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:139:30
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let value = unsafe { std::mem::transmute::<u32, f32>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `f32::from_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let value = unsafe { std::mem::transmute::<u64, f64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `f64::from_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:185:30
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:194:30
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:203:30
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:212:30
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:220:32
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:229:32
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:238:32
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:247:32
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:256:32
[INFO] [stdout]     |
[INFO] [stdout] 256 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:364:40
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     let raw = unsafe { std::mem::transmute::<i8, u8>(value as i8) };
[INFO] [stdout]     |                                        -----------------------------^^^^^^^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        help: replace this with: `i8::cast_unsigned`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:412:42
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let int_value = unsafe { std::mem::transmute::<f64, u64>(*value) };
[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/lib.rs:462:40
[INFO] [stdout]     |
[INFO] [stdout] 462 |                 let type_id = unsafe { std::mem::transmute::<i8, u8>(extension.type_id) };
[INFO] [stdout]     |                                        -----------------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        help: replace this with: `i8::cast_unsigned`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:105:32
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[2]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:116:32
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[3]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[5]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:139:30
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let value = unsafe { std::mem::transmute::<u32, f32>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `f32::from_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let value = unsafe { std::mem::transmute::<u64, f64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `f64::from_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:185:30
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:194:30
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:203:30
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:212:30
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let value = unsafe { std::mem::transmute::<u64, i64>(raw_value) };
[INFO] [stdout]     |                              -------------------------------^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              help: replace this with: `u64::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:220:32
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:229:32
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:238:32
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:247:32
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/parser.rs:256:32
[INFO] [stdout]     |
[INFO] [stdout] 256 |         let type_id = unsafe { std::mem::transmute::<u8, i8>(raw[1]) };
[INFO] [stdout]     |                                -----------------------------^^^^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: replace this with: `u8::cast_signed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "4f82366a2717306979502936677e0fcbf438bee68b76e737f88d99ca129431aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f82366a2717306979502936677e0fcbf438bee68b76e737f88d99ca129431aa", kill_on_drop: false }`
[INFO] [stdout] 4f82366a2717306979502936677e0fcbf438bee68b76e737f88d99ca129431aa