[INFO] fetching crate r-description 0.3.7...
[INFO] checking r-description-0.3.7 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate r-description 0.3.7 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate r-description 0.3.7
[INFO] finished tweaking crates.io crate r-description 0.3.7
[INFO] tweaked toml for crates.io crate r-description 0.3.7 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate r-description 0.3.7 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate r-description 0.3.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09c11a4b1a281b8b29aa86643f02f9e008a9702b6baef1e7b80203e9195fc374
[INFO] running `Command { std: "docker" "start" "-a" "09c11a4b1a281b8b29aa86643f02f9e008a9702b6baef1e7b80203e9195fc374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09c11a4b1a281b8b29aa86643f02f9e008a9702b6baef1e7b80203e9195fc374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09c11a4b1a281b8b29aa86643f02f9e008a9702b6baef1e7b80203e9195fc374", kill_on_drop: false }`
[INFO] [stdout] 09c11a4b1a281b8b29aa86643f02f9e008a9702b6baef1e7b80203e9195fc374
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89bdc44ce5f57fa934be346a3ec78396d910718c08d933783f0daecd770a54fc
[INFO] running `Command { std: "docker" "start" "-a" "89bdc44ce5f57fa934be346a3ec78396d910718c08d933783f0daecd770a54fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling icu_properties_data v2.1.1
[INFO] [stderr]     Checking countme v3.0.1
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking text-size v1.1.1
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking rowan v0.16.1
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling deb822-derive v0.3.0
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking deb822-fast v0.2.2
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking deb822-lossless v0.5.0
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking r-description v0.3.7 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `ParseError` is never constructed
[INFO] [stdout]    --> src/lossless.rs:345:16
[INFO] [stdout]     |
[INFO] [stdout] 345 |     pub struct ParseError(Vec<String>);
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ParseError` is never constructed
[INFO] [stdout]    --> src/lossless.rs:345:16
[INFO] [stdout]     |
[INFO] [stdout] 345 |     pub struct ParseError(Vec<String>);
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `r-description` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `r-description` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "89bdc44ce5f57fa934be346a3ec78396d910718c08d933783f0daecd770a54fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89bdc44ce5f57fa934be346a3ec78396d910718c08d933783f0daecd770a54fc", kill_on_drop: false }`
[INFO] [stdout] 89bdc44ce5f57fa934be346a3ec78396d910718c08d933783f0daecd770a54fc
