[INFO] fetching crate varu64 0.7.0...
[INFO] checking varu64-0.7.0 against try#21cad1f647cfd05a566220f933edd88a53e50bcf for pr-129249-1
[INFO] extracting crate varu64 0.7.0 into /workspace/builds/worker-7-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-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate varu64 0.7.0 on toolchain 21cad1f647cfd05a566220f933edd88a53e50bcf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+21cad1f647cfd05a566220f933edd88a53e50bcf" "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" "+21cad1f647cfd05a566220f933edd88a53e50bcf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding quickcheck v0.7.2 (available: v1.1.0)
[INFO] [stderr]       Adding snafu v0.6.10 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+21cad1f647cfd05a566220f933edd88a53e50bcf" "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-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2
[INFO] running `Command { std: "docker" "start" "e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2" "/opt/rustwide/cargo-home/bin/cargo" "+21cad1f647cfd05a566220f933edd88a53e50bcf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2" "/opt/rustwide/cargo-home/bin/cargo" "+21cad1f647cfd05a566220f933edd88a53e50bcf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking regex-syntax v0.8.11
[INFO] [stderr]    Compiling doc-comment v0.3.4
[INFO] [stderr]     Checking log v0.4.32
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]     Checking regex v1.12.4
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr]     Checking snafu v0.6.10
[INFO] [stderr]     Checking 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: 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] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 140 -     let bytes: [u8; 8] = unsafe { core::mem::transmute(u64::to_be(n)) };
[INFO] [stdout] 140 +     let bytes: [u8; 8] = unsafe { u64::to_ne_bytes(u64::to_be(n)) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[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: 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] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 140 -     let bytes: [u8; 8] = unsafe { core::mem::transmute(u64::to_be(n)) };
[INFO] [stdout] 140 +     let bytes: [u8; 8] = unsafe { u64::to_ne_bytes(u64::to_be(n)) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.88s
[INFO] running `Command { std: "docker" "inspect" "e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2", kill_on_drop: false }`
[INFO] [stdout] e7d81d1b64879198ac099f47fab39324b53bc4edefe105a439c3a6c10ab7f2a2
