[INFO] fetching crate varu64 0.7.0...
[INFO] building varu64-0.7.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate varu64 0.7.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate varu64 0.7.0
[INFO] finished tweaking crates.io crate varu64 0.7.0
[INFO] tweaked toml for crates.io crate varu64 0.7.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate varu64 0.7.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding quickcheck v0.7.2 (available: v1.0.3)
[INFO] [stderr]       Adding snafu v0.6.10 (available: v0.8.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa180fcb82672ec073a8f726be448f5a4b1172afeac85a6f152929e3bffcbded
[INFO] running `Command { std: "docker" "start" "-a" "fa180fcb82672ec073a8f726be448f5a4b1172afeac85a6f152929e3bffcbded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa180fcb82672ec073a8f726be448f5a4b1172afeac85a6f152929e3bffcbded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa180fcb82672ec073a8f726be448f5a4b1172afeac85a6f152929e3bffcbded", kill_on_drop: false }`
[INFO] [stdout] fa180fcb82672ec073a8f726be448f5a4b1172afeac85a6f152929e3bffcbded
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 215964a0f56ee3d43560ff0d88167447a7a3b2b2d103aabe4ed02f7041cdface
[INFO] running `Command { std: "docker" "start" "-a" "215964a0f56ee3d43560ff0d88167447a7a3b2b2d103aabe4ed02f7041cdface", kill_on_drop: false }`
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]    Compiling snafu v0.6.10
[INFO] [stderr]    Compiling varu64 v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:140:35
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let bytes: [u8; 8] = unsafe { core::mem::transmute(u64::to_be(n)) };
[INFO] [stdout]     |                                   --------------------^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: replace this with: `u64::to_ne_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `to_le_bytes` and `to_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 1.71s
[INFO] running `Command { std: "docker" "inspect" "215964a0f56ee3d43560ff0d88167447a7a3b2b2d103aabe4ed02f7041cdface", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "215964a0f56ee3d43560ff0d88167447a7a3b2b2d103aabe4ed02f7041cdface", kill_on_drop: false }`
[INFO] [stdout] 215964a0f56ee3d43560ff0d88167447a7a3b2b2d103aabe4ed02f7041cdface
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 350a12d0e7cb7d7a76f27daf52987b7cee53eeff31cd7e794f8db24c3cd2ae2a
[INFO] running `Command { std: "docker" "start" "-a" "350a12d0e7cb7d7a76f27daf52987b7cee53eeff31cd7e794f8db24c3cd2ae2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:140:35
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let bytes: [u8; 8] = unsafe { core::mem::transmute(u64::to_be(n)) };
[INFO] [stdout]     |                                   --------------------^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: replace this with: `u64::to_ne_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quickcheck v0.7.2
[INFO] [stderr]    Compiling varu64 v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/lib.rs:140:35
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let bytes: [u8; 8] = unsafe { core::mem::transmute(u64::to_be(n)) };
[INFO] [stdout]     |                                   --------------------^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: replace this with: `u64::to_ne_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: there's also `to_le_bytes` and `to_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 `test` profile [unoptimized + debuginfo] target(s) in 9.71s
[INFO] running `Command { std: "docker" "inspect" "350a12d0e7cb7d7a76f27daf52987b7cee53eeff31cd7e794f8db24c3cd2ae2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "350a12d0e7cb7d7a76f27daf52987b7cee53eeff31cd7e794f8db24c3cd2ae2a", kill_on_drop: false }`
[INFO] [stdout] 350a12d0e7cb7d7a76f27daf52987b7cee53eeff31cd7e794f8db24c3cd2ae2a