[INFO] fetching crate serde-prc 0.1.1...
[INFO] checking serde-prc-0.1.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate serde-prc 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate serde-prc 0.1.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-prc 0.1.1
[INFO] finished tweaking crates.io crate serde-prc 0.1.1
[INFO] tweaked toml for crates.io crate serde-prc 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding binrw v0.11.2 (latest: v0.14.0)
[INFO] [stderr]       Adding binrw_derive v0.11.2 (latest: v0.14.0)
[INFO] [stderr]       Adding dashmap v5.5.3 (latest: v6.0.1)
[INFO] [stderr]       Adding diff-struct v0.3.1 (latest: v0.5.3)
[INFO] [stderr]       Adding diff_derive v0.1.2 (latest: v0.2.3)
[INFO] [stderr]       Adding owo-colors v3.5.0 (latest: v4.0.0)
[INFO] [stderr]       Adding serial_test v2.0.0 (latest: v3.1.1)
[INFO] [stderr]       Adding serial_test_derive v2.0.0 (latest: v3.1.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hash40 v1.3.1
[INFO] [stderr]   Downloaded diff_derive v0.1.2
[INFO] [stderr]   Downloaded binrw v0.11.2
[INFO] [stderr]   Downloaded diff-struct v0.3.1
[INFO] [stderr]   Downloaded binrw_derive v0.11.2
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 930c9c5840b3e23fe859024348dd30b663e69b5678596f60f582794375166cc4
[INFO] running `Command { std: "docker" "start" "-a" "930c9c5840b3e23fe859024348dd30b663e69b5678596f60f582794375166cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "930c9c5840b3e23fe859024348dd30b663e69b5678596f60f582794375166cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930c9c5840b3e23fe859024348dd30b663e69b5678596f60f582794375166cc4", kill_on_drop: false }`
[INFO] [stdout] 930c9c5840b3e23fe859024348dd30b663e69b5678596f60f582794375166cc4
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15d6a65c88b49ac64d30263babc1c0f75616409a79b87fcb88f94b740ff545b6
[INFO] running `Command { std: "docker" "start" "-a" "15d6a65c88b49ac64d30263babc1c0f75616409a79b87fcb88f94b740ff545b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling binrw_derive v0.11.2
[INFO] [stderr]    Compiling binrw v0.11.2
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]     Checking bimap v0.6.3
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling serial_test_derive v2.0.0
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking serial_test v2.0.0
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]    Compiling diff_derive v0.1.2
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking diff-struct v0.3.1
[INFO] [stderr]     Checking hash40 v1.3.1
[INFO] [stderr]     Checking serde-prc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]    --> src/de.rs:487:13
[INFO] [stdout]     |
[INFO] [stdout] 487 |         let offset = self.reader.stream_position()?;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]    --> src/de.rs:487:13
[INFO] [stdout]     |
[INFO] [stdout] 487 |         let offset = self.reader.stream_position()?;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.76s
[INFO] running `Command { std: "docker" "inspect" "15d6a65c88b49ac64d30263babc1c0f75616409a79b87fcb88f94b740ff545b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15d6a65c88b49ac64d30263babc1c0f75616409a79b87fcb88f94b740ff545b6", kill_on_drop: false }`
[INFO] [stdout] 15d6a65c88b49ac64d30263babc1c0f75616409a79b87fcb88f94b740ff545b6
[INFO] checking serde-prc-0.1.1 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate serde-prc 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate serde-prc 0.1.1 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-prc 0.1.1
[INFO] finished tweaking crates.io crate serde-prc 0.1.1
[INFO] tweaked toml for crates.io crate serde-prc 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding binrw v0.11.2 (latest: v0.14.0)
[INFO] [stderr]       Adding binrw_derive v0.11.2 (latest: v0.14.0)
[INFO] [stderr]       Adding dashmap v5.5.3 (latest: v6.0.1)
[INFO] [stderr]       Adding diff-struct v0.3.1 (latest: v0.5.3)
[INFO] [stderr]       Adding diff_derive v0.1.2 (latest: v0.2.3)
[INFO] [stderr]       Adding owo-colors v3.5.0 (latest: v4.0.0)
[INFO] [stderr]       Adding serial_test v2.0.0 (latest: v3.1.1)
[INFO] [stderr]       Adding serial_test_derive v2.0.0 (latest: v3.1.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5aef527449ee641b25291a1306ac335eafe302dbd33e5c5d8c91f49f88c661ca
[INFO] running `Command { std: "docker" "start" "-a" "5aef527449ee641b25291a1306ac335eafe302dbd33e5c5d8c91f49f88c661ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5aef527449ee641b25291a1306ac335eafe302dbd33e5c5d8c91f49f88c661ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aef527449ee641b25291a1306ac335eafe302dbd33e5c5d8c91f49f88c661ca", kill_on_drop: false }`
[INFO] [stdout] 5aef527449ee641b25291a1306ac335eafe302dbd33e5c5d8c91f49f88c661ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 356eff77bb985ee249588a7de1b67152a20606530ea7b96deb2488c852dcc4bf
[INFO] running `Command { std: "docker" "start" "-a" "356eff77bb985ee249588a7de1b67152a20606530ea7b96deb2488c852dcc4bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling binrw_derive v0.11.2
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling binrw v0.11.2
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]     Checking bimap v0.6.3
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling serial_test_derive v2.0.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking serial_test v2.0.0
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]    Compiling diff_derive v0.1.2
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking diff-struct v0.3.1
[INFO] [stderr]     Checking hash40 v1.3.1
[INFO] [stderr]     Checking serde-prc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]    --> src/de.rs:487:13
[INFO] [stdout]     |
[INFO] [stdout] 487 |         let offset = self.reader.stream_position()?;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `offset`
[INFO] [stdout]    --> src/de.rs:487:13
[INFO] [stdout]     |
[INFO] [stdout] 487 |         let offset = self.reader.stream_position()?;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.89s
[INFO] running `Command { std: "docker" "inspect" "356eff77bb985ee249588a7de1b67152a20606530ea7b96deb2488c852dcc4bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "356eff77bb985ee249588a7de1b67152a20606530ea7b96deb2488c852dcc4bf", kill_on_drop: false }`
[INFO] [stdout] 356eff77bb985ee249588a7de1b67152a20606530ea7b96deb2488c852dcc4bf