[INFO] fetching crate serde-ext 0.1.1...
[INFO] checking serde-ext-0.1.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate serde-ext 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate serde-ext 0.1.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-ext 0.1.1
[INFO] finished tweaking crates.io crate serde-ext 0.1.1
[INFO] tweaked toml for crates.io crate serde-ext 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 35 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.10.1 (latest: v0.22.1)
[INFO] [stderr]       Adding derive_more v0.15.0 (latest: v1.0.0)
[INFO] [stderr]       Adding idna v0.1.5 (latest: v1.0.2)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.86)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.37)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.1)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.23)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.76)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.5)
[INFO] [stderr]       Adding url v1.7.2 (latest: v2.5.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_more v0.15.0
[INFO] [stderr]   Downloaded serde-ext-macros v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6ab75ded06df32f2f6a2a6667f50b150a8010b76f2d9bbeed25a4a39b10c1a5
[INFO] running `Command { std: "docker" "start" "-a" "a6ab75ded06df32f2f6a2a6667f50b150a8010b76f2d9bbeed25a4a39b10c1a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6ab75ded06df32f2f6a2a6667f50b150a8010b76f2d9bbeed25a4a39b10c1a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6ab75ded06df32f2f6a2a6667f50b150a8010b76f2d9bbeed25a4a39b10c1a5", kill_on_drop: false }`
[INFO] [stdout] a6ab75ded06df32f2f6a2a6667f50b150a8010b76f2d9bbeed25a4a39b10c1a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 846104eb1acc197920ac1b53c5c248fb8c0d37a0c49dc7d3f31384d889d9630f
[INFO] running `Command { std: "docker" "start" "-a" "846104eb1acc197920ac1b53c5c248fb8c0d37a0c49dc7d3f31384d889d9630f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stderr]    Compiling serde-ext-macros v0.1.1
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]     Checking serde-ext v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `a`, `b`, `url`, `base64_bytes`, and `non_empty_string` are never read
[INFO] [stdout]   --> examples/simple.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | pub struct Foo {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 4  |     #[serde_ext(default(literal = 23))]
[INFO] [stdout] 5  |     a: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 6  |     #[serde_ext(default(inline = r#"|| String::from("Hello") "#))]
[INFO] [stdout] 7  |     b: String,
[INFO] [stdout]    |     ^
[INFO] [stdout] 8  |     #[serde(deserialize_with = "serde_ext::de::parsable")]
[INFO] [stdout] 9  |     url: url::Url,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 10 |     #[serde(with = "serde_ext::base64")]
[INFO] [stdout] 11 |     base64_bytes: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 12 |     #[serde(deserialize_with = "serde_ext::de::non_empty_string")]
[INFO] [stdout] 13 |     non_empty_string: Option<String>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 5.62s
[INFO] running `Command { std: "docker" "inspect" "846104eb1acc197920ac1b53c5c248fb8c0d37a0c49dc7d3f31384d889d9630f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "846104eb1acc197920ac1b53c5c248fb8c0d37a0c49dc7d3f31384d889d9630f", kill_on_drop: false }`
[INFO] [stdout] 846104eb1acc197920ac1b53c5c248fb8c0d37a0c49dc7d3f31384d889d9630f