[INFO] fetching crate serde_bucket 0.1.5...
[INFO] checking serde_bucket-0.1.5 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate serde_bucket 0.1.5 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate serde_bucket 0.1.5 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_bucket 0.1.5
[INFO] finished tweaking crates.io crate serde_bucket 0.1.5
[INFO] tweaked toml for crates.io crate serde_bucket 0.1.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 933ef52851c3b7886be34ec0bdc276764bd1c8412609eb02cda1555833f3bbb5
[INFO] running `Command { std: "docker" "start" "-a" "933ef52851c3b7886be34ec0bdc276764bd1c8412609eb02cda1555833f3bbb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "933ef52851c3b7886be34ec0bdc276764bd1c8412609eb02cda1555833f3bbb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "933ef52851c3b7886be34ec0bdc276764bd1c8412609eb02cda1555833f3bbb5", kill_on_drop: false }`
[INFO] [stdout] 933ef52851c3b7886be34ec0bdc276764bd1c8412609eb02cda1555833f3bbb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36ec91ef71b5a682f0c5c6e0e8d4d5b0a52a0f9c6cd8dc7b09e772ee874d675f
[INFO] running `Command { std: "docker" "start" "-a" "36ec91ef71b5a682f0c5c6e0e8d4d5b0a52a0f9c6cd8dc7b09e772ee874d675f", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_bucket v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/de.rs:19:27
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn deserialize_any<V>(mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor<'de> {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/de.rs:19:27
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn deserialize_any<V>(mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor<'de> {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "36ec91ef71b5a682f0c5c6e0e8d4d5b0a52a0f9c6cd8dc7b09e772ee874d675f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ec91ef71b5a682f0c5c6e0e8d4d5b0a52a0f9c6cd8dc7b09e772ee874d675f", kill_on_drop: false }`
[INFO] [stdout] 36ec91ef71b5a682f0c5c6e0e8d4d5b0a52a0f9c6cd8dc7b09e772ee874d675f