[INFO] cloning repository https://github.com/bluk/readfeed
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bluk/readfeed" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluk%2Freadfeed", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluk%2Freadfeed'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60bf71dd7650b85184eca5bd83513bbac9fa31e6
[INFO] checking bluk/readfeed against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluk%2Freadfeed" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bluk/readfeed
[INFO] finished tweaking git repo https://github.com/bluk/readfeed
[INFO] tweaked toml for git repo https://github.com/bluk/readfeed written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bluk/readfeed 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/bluk/readfeed 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2f8594771ee2f40f8a7b4d036d79bfe9713ed81a2cd55dc2d75b280166d84ac6
[INFO] running `Command { std: "docker" "start" "-a" "2f8594771ee2f40f8a7b4d036d79bfe9713ed81a2cd55dc2d75b280166d84ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f8594771ee2f40f8a7b4d036d79bfe9713ed81a2cd55dc2d75b280166d84ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f8594771ee2f40f8a7b4d036d79bfe9713ed81a2cd55dc2d75b280166d84ac6", kill_on_drop: false }`
[INFO] [stdout] 2f8594771ee2f40f8a7b4d036d79bfe9713ed81a2cd55dc2d75b280166d84ac6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1a35fbedae1fbdedd065d7a6d3840812f7a85f7cfc18352983cfd25e261090f3
[INFO] running `Command { std: "docker" "start" "-a" "1a35fbedae1fbdedd065d7a6d3840812f7a85f7cfc18352983cfd25e261090f3", kill_on_drop: false }`
[INFO] [stderr]     Checking maybe_xml v0.11.0
[INFO] [stderr]     Checking readfeed v0.2.2 (/opt/rustwide/workdir/readfeed)
[INFO] [stdout] error: struct `Category` is never constructed
[INFO] [stdout]    --> readfeed/src/rss.rs:292:15
[INFO] [stdout]     |
[INFO] [stdout] 292 | content_elem!(Category);
[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]     = note: this error originates in the macro `content_elem` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `readfeed` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Category` is never constructed
[INFO] [stdout]    --> readfeed/src/rss.rs:292:15
[INFO] [stdout]     |
[INFO] [stdout] 292 | content_elem!(Category);
[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]     = note: this error originates in the macro `content_elem` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `readfeed` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "1a35fbedae1fbdedd065d7a6d3840812f7a85f7cfc18352983cfd25e261090f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a35fbedae1fbdedd065d7a6d3840812f7a85f7cfc18352983cfd25e261090f3", kill_on_drop: false }`
[INFO] [stdout] 1a35fbedae1fbdedd065d7a6d3840812f7a85f7cfc18352983cfd25e261090f3