[INFO] fetching crate exprz-core 0.0.6...
[INFO] documenting exprz-core-0.0.6 against master#d7d9f15be205b45d44700e7ac33b4f79b91f9680 for pr-117450
[INFO] extracting crate exprz-core 0.0.6 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate exprz-core 0.0.6 on toolchain d7d9f15be205b45d44700e7ac33b4f79b91f9680
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exprz-core 0.0.6
[INFO] finished tweaking crates.io crate exprz-core 0.0.6
[INFO] tweaked toml for crates.io crate exprz-core 0.0.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccb0a532f564a6e1d2ac2b930e94f7242be9d26dbc76c8f3128c90ce85918d1a
[INFO] running `Command { std: "docker" "start" "-a" "ccb0a532f564a6e1d2ac2b930e94f7242be9d26dbc76c8f3128c90ce85918d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccb0a532f564a6e1d2ac2b930e94f7242be9d26dbc76c8f3128c90ce85918d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccb0a532f564a6e1d2ac2b930e94f7242be9d26dbc76c8f3128c90ce85918d1a", kill_on_drop: false }`
[INFO] [stdout] ccb0a532f564a6e1d2ac2b930e94f7242be9d26dbc76c8f3128c90ce85918d1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86e7e8980eb626fce22cb9cf7dc4f98833560093bb16933b2a110b23fad71908
[INFO] running `Command { std: "docker" "start" "-a" "86e7e8980eb626fce22cb9cf7dc4f98833560093bb16933b2a110b23fad71908", kill_on_drop: false }`
[INFO] [stderr]  Documenting exprz-core v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/exprz_core/index.html
[INFO] running `Command { std: "docker" "inspect" "86e7e8980eb626fce22cb9cf7dc4f98833560093bb16933b2a110b23fad71908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e7e8980eb626fce22cb9cf7dc4f98833560093bb16933b2a110b23fad71908", kill_on_drop: false }`
[INFO] [stdout] 86e7e8980eb626fce22cb9cf7dc4f98833560093bb16933b2a110b23fad71908
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14387715200cc840139000e0890f45a4ae899794d126a19eab2d34aa2d675952
[INFO] running `Command { std: "docker" "start" "-a" "14387715200cc840139000e0890f45a4ae899794d126a19eab2d34aa2d675952", kill_on_drop: false }`
[INFO] [stderr]  Documenting exprz-core v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/exprz_core/index.html
[INFO] running `Command { std: "docker" "inspect" "14387715200cc840139000e0890f45a4ae899794d126a19eab2d34aa2d675952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14387715200cc840139000e0890f45a4ae899794d126a19eab2d34aa2d675952", kill_on_drop: false }`
[INFO] [stdout] 14387715200cc840139000e0890f45a4ae899794d126a19eab2d34aa2d675952
[INFO] documenting exprz-core-0.0.6 against master#50be22964035027398754e54cd3a497efb00f83e for pr-117450
[INFO] extracting crate exprz-core 0.0.6 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate exprz-core 0.0.6 on toolchain 50be22964035027398754e54cd3a497efb00f83e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exprz-core 0.0.6
[INFO] finished tweaking crates.io crate exprz-core 0.0.6
[INFO] tweaked toml for crates.io crate exprz-core 0.0.6 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7755e8d7e6d0416198e0fe4625fce5e687b64c0def689424468e259be869ed07
[INFO] running `Command { std: "docker" "start" "-a" "7755e8d7e6d0416198e0fe4625fce5e687b64c0def689424468e259be869ed07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7755e8d7e6d0416198e0fe4625fce5e687b64c0def689424468e259be869ed07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7755e8d7e6d0416198e0fe4625fce5e687b64c0def689424468e259be869ed07", kill_on_drop: false }`
[INFO] [stdout] 7755e8d7e6d0416198e0fe4625fce5e687b64c0def689424468e259be869ed07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b20d20e0415821dd5acc564b4167068e1a49151d782391f2214470b70bc2dc30
[INFO] running `Command { std: "docker" "start" "-a" "b20d20e0415821dd5acc564b4167068e1a49151d782391f2214470b70bc2dc30", kill_on_drop: false }`
[INFO] [stderr]  Documenting exprz-core v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: missing required bound on `Iter`
[INFO] [stdout]     --> src/lib.rs:1008:9
[INFO] [stdout]      |
[INFO] [stdout] 1008 | /         type Iter<'t>: Iterator<Item = Self::Item<'t>>
[INFO] [stdout] 1009 | |         where
[INFO] [stdout] 1010 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      | 
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Item`
[INFO] [stdout]     --> src/lib.rs:1003:9
[INFO] [stdout]      |
[INFO] [stdout] 1003 | /         type Item<'t>: Borrow<T>
[INFO] [stdout] 1004 | |         where
[INFO] [stdout] 1005 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      | 
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `IterGen`
[INFO] [stdout]     --> src/lib.rs:1019:9
[INFO] [stdout]      |
[INFO] [stdout] 1019 | /         type IterGen<'t>: IteratorGen<T>
[INFO] [stdout] 1020 | |         where
[INFO] [stdout] 1021 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      | 
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `exprz-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/50be22964035027398754e54cd3a497efb00f83e/bin/rustdoc --edition=2018 --crate-type lib --crate-name exprz_core src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8e2ec82e07901396 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid --crate-version 0.0.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b20d20e0415821dd5acc564b4167068e1a49151d782391f2214470b70bc2dc30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b20d20e0415821dd5acc564b4167068e1a49151d782391f2214470b70bc2dc30", kill_on_drop: false }`
[INFO] [stdout] b20d20e0415821dd5acc564b4167068e1a49151d782391f2214470b70bc2dc30