[INFO] cloning repository https://github.com/oxalica/palc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oxalica/palc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fpalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fpalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8eec699c3e52740cdae215160e54e2047610767
[INFO] checking oxalica/palc against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fpalc" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/oxalica/palc
[INFO] finished tweaking git repo https://github.com/oxalica/palc
[INFO] tweaked toml for git repo https://github.com/oxalica/palc written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/oxalica/palc on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/oxalica/palc 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca7bfe094ab36766cb4564e5e7d03d39ca0b56b43483dc4183ea96ed84283864
[INFO] running `Command { std: "docker" "start" "-a" "ca7bfe094ab36766cb4564e5e7d03d39ca0b56b43483dc4183ea96ed84283864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca7bfe094ab36766cb4564e5e7d03d39ca0b56b43483dc4183ea96ed84283864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca7bfe094ab36766cb4564e5e7d03d39ca0b56b43483dc4183ea96ed84283864", kill_on_drop: false }`
[INFO] [stdout] ca7bfe094ab36766cb4564e5e7d03d39ca0b56b43483dc4183ea96ed84283864
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cef41c7ea412bea88ccd8f76b75d1cfdd25a0d687e04b9d49a6620eb949e5c5
[INFO] running `Command { std: "docker" "start" "-a" "0cef41c7ea412bea88ccd8f76b75d1cfdd25a0d687e04b9d49a6620eb949e5c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]     Checking winnow v1.0.0
[INFO] [stderr]     Checking toml_writer v1.0.7+spec-1.1.0
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking dissimilar v1.0.11
[INFO] [stderr]     Checking glob v0.3.3
[INFO] [stderr]     Checking os_str_bytes v7.1.1
[INFO] [stderr]     Checking unicode-ident v1.0.24
[INFO] [stderr]     Checking heck v0.5.0
[INFO] [stderr]     Checking test-suite v0.1.0 (/opt/rustwide/workdir/test-suite)
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking serde_spanned v1.0.4
[INFO] [stderr]     Checking toml_datetime v1.0.1+spec-1.1.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking proc-macro2 v1.0.106
[INFO] [stderr]     Checking expect-test v1.5.1
[INFO] [stderr]     Checking toml_parser v1.0.10+spec-1.1.0
[INFO] [stderr]     Checking quote v1.0.45
[INFO] [stderr]     Checking toml v1.0.7+spec-1.1.0
[INFO] [stderr]     Checking prettyplease v0.2.37
[INFO] [stderr]     Checking palc-derive v0.0.2 (/opt/rustwide/workdir/derive)
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking palc v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `StructParserFlavor` is never constructed
[INFO] [stdout]   --> src/runtime.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub struct StructParserFlavor<A>(A);
[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_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `palc` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0cef41c7ea412bea88ccd8f76b75d1cfdd25a0d687e04b9d49a6620eb949e5c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cef41c7ea412bea88ccd8f76b75d1cfdd25a0d687e04b9d49a6620eb949e5c5", kill_on_drop: false }`
[INFO] [stdout] 0cef41c7ea412bea88ccd8f76b75d1cfdd25a0d687e04b9d49a6620eb949e5c5