[INFO] fetching crate barse 0.3.0...
[INFO] checking barse-0.3.0 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate barse 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate barse 0.3.0 on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate barse 0.3.0
[INFO] finished tweaking crates.io crate barse 0.3.0
[INFO] tweaked toml for crates.io crate barse 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96a89e20a38e9bb12265740afc6b4bc9b01f86cc7554799559d5b92da502ac4c
[INFO] running `Command { std: "docker" "start" "-a" "96a89e20a38e9bb12265740afc6b4bc9b01f86cc7554799559d5b92da502ac4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96a89e20a38e9bb12265740afc6b4bc9b01f86cc7554799559d5b92da502ac4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96a89e20a38e9bb12265740afc6b4bc9b01f86cc7554799559d5b92da502ac4c", kill_on_drop: false }`
[INFO] [stdout] 96a89e20a38e9bb12265740afc6b4bc9b01f86cc7554799559d5b92da502ac4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f859deafe1d5e5c0193594f6fbf26696177a3ffbda70191b0321bb179027333
[INFO] running `Command { std: "docker" "start" "-a" "3f859deafe1d5e5c0193594f6fbf26696177a3ffbda70191b0321bb179027333", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]     Checking bytesize v1.3.0
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling barse-derive-impl v0.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling barse-derive v0.3.0
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]     Checking barse v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/derive_with.rs:121:41
[INFO] [stdout]     |
[INFO] [stdout] 121 | struct CarryOpt(#[barse(with = "cond")] Option<u8>);
[INFO] [stdout]     |        -------- field in this struct    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/derive_with.rs:125:75
[INFO] [stdout]     |
[INFO] [stdout] 125 | struct UseFn(#[barse(with = "wrap::Fn(|| Ok::<_, barse::Error>(carry))")] String);
[INFO] [stdout]     |        ----- field in this struct                                         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/derive_with.rs:129:55
[INFO] [stdout]     |
[INFO] [stdout] 129 | struct UseCarry(#[barse(with = "wrap::Value(carry)")] String);
[INFO] [stdout]     |        -------- field in this struct                  ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/derive_with.rs:132:48
[INFO] [stdout]     |
[INFO] [stdout] 132 | struct UseDef(#[barse(with = "wrap::Default")] String);
[INFO] [stdout]     |        ------ field in this struct             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.44s
[INFO] running `Command { std: "docker" "inspect" "3f859deafe1d5e5c0193594f6fbf26696177a3ffbda70191b0321bb179027333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f859deafe1d5e5c0193594f6fbf26696177a3ffbda70191b0321bb179027333", kill_on_drop: false }`
[INFO] [stdout] 3f859deafe1d5e5c0193594f6fbf26696177a3ffbda70191b0321bb179027333