[INFO] fetching crate lightpanel 0.1.0-prealpha+001...
[INFO] documenting lightpanel-0.1.0-prealpha+001 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate lightpanel 0.1.0-prealpha+001 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate lightpanel 0.1.0-prealpha+001 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lightpanel 0.1.0-prealpha+001
[INFO] finished tweaking crates.io crate lightpanel 0.1.0-prealpha+001
[INFO] tweaked toml for crates.io crate lightpanel 0.1.0-prealpha+001 written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 840f5a3bcfe48d6cd7bb85efe5068a1b5a9a9589619c7e1042ad36534aea2ea9
[INFO] running `Command { std: "docker" "start" "-a" "840f5a3bcfe48d6cd7bb85efe5068a1b5a9a9589619c7e1042ad36534aea2ea9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "840f5a3bcfe48d6cd7bb85efe5068a1b5a9a9589619c7e1042ad36534aea2ea9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "840f5a3bcfe48d6cd7bb85efe5068a1b5a9a9589619c7e1042ad36534aea2ea9", kill_on_drop: false }`
[INFO] [stdout] 840f5a3bcfe48d6cd7bb85efe5068a1b5a9a9589619c7e1042ad36534aea2ea9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 270d819d1b856bb1f81e6327473808b6e273ce912ef4143abaf5cf96988d5a2e
[INFO] running `Command { std: "docker" "start" "-a" "270d819d1b856bb1f81e6327473808b6e273ce912ef4143abaf5cf96988d5a2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling gio v0.6.0
[INFO] [stderr]    Compiling cairo-rs v0.6.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.6.0
[INFO] [stderr]    Compiling pango v0.6.0
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]    Compiling gdk v0.10.0
[INFO] [stderr]    Compiling atk v0.6.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling gtk v0.6.0
[INFO] [stderr]    Compiling lightpanel v0.1.0-prealpha+001 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking runtime-fmt v0.3.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling glib-sys v0.8.0
[INFO] [stderr]    Compiling gobject-sys v0.8.0
[INFO] [stderr]    Compiling gio-sys v0.8.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.8.0
[INFO] [stderr]    Compiling pango-sys v0.8.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.8.0
[INFO] [stderr]    Compiling gdk-sys v0.8.0
[INFO] [stderr]    Compiling atk-sys v0.8.0
[INFO] [stderr]    Compiling gtk-sys v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Position` in `v1`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:522:39
[INFO] [stdout]     |
[INFO] [stdout] 522 |                         position: v1::Position::At(i),
[INFO] [stdout]     |                                       ^^^^^^^^ not found in `v1`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]     |
[INFO] [stdout] 38  | use fmt_macros::Position;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Position` in `v1`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:544:39
[INFO] [stdout]     |
[INFO] [stdout] 544 |                         position: v1::Position::At(argument_pos),
[INFO] [stdout]     |                                       ^^^^^^^^ not found in `v1`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]     |
[INFO] [stdout] 38  | use fmt_macros::Position;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(fmt_internals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(conservative_impl_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(print_internals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(rustc_private)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(try_from)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for autoref due to conflicting requirements
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:195:33
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let pieces = self.inner.pieces();
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: first, the lifetime cannot outlive the lifetime `'s` as defined on the impl at 175:6...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:175:6
[INFO] [stdout]     |
[INFO] [stdout] 175 | impl<'s, T: FormatArgs> PreparedFormat<'s, T> {
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: ...so that the type `Parsed<'s, DelayedParse<T>>` is not borrowed for too long
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:195:22
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let pieces = self.inner.pieces();
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout]     = note: but, the lifetime must be valid for the static lifetime...
[INFO] [stdout] note: ...so that the expression is assignable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:201:58
[INFO] [stdout]     |
[INFO] [stdout] 201 |             Some(ref fmt) => Arguments::new_v1_formatted(&pieces, &args, fmt),
[INFO] [stdout]     |                                                          ^^^^^^^
[INFO] [stdout]     = note: expected `&[&'static str]`
[INFO] [stdout]                found `&[&str]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for autoref due to conflicting requirements
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:266:33
[INFO] [stdout]     |
[INFO] [stdout] 266 |         let pieces = self.inner.pieces();
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: first, the lifetime cannot outlive the lifetime `'s` as defined on the impl at 246:6...
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:246:6
[INFO] [stdout]     |
[INFO] [stdout] 246 | impl<'s> FormatBuf<'s> {
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: ...so that the type `Parsed<'s, ImmediateParse<'s>>` is not borrowed for too long
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:266:22
[INFO] [stdout]     |
[INFO] [stdout] 266 |         let pieces = self.inner.pieces();
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout]     = note: but, the lifetime must be valid for the static lifetime...
[INFO] [stdout] note: ...so that the expression is assignable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:268:58
[INFO] [stdout]     |
[INFO] [stdout] 268 |             Some(ref fmt) => Arguments::new_v1_formatted(&pieces, &self.inner.args, fmt),
[INFO] [stdout]     |                                                          ^^^^^^^
[INFO] [stdout]     = note: expected `&[&'static str]`
[INFO] [stdout]                found `&[&str]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stdout] error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/fmt_macros.rs:422:34
[INFO] [stdout]     |
[INFO] [stdout] 422 |             Some(&(pos, c)) if c.is_xid_start() => {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `runtime-fmt`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `is_xid_continue` found for type `char` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/fmt_macros.rs:431:18
[INFO] [stdout]     |
[INFO] [stdout] 431 |             if c.is_xid_continue() {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^ method not found in `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0495, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "270d819d1b856bb1f81e6327473808b6e273ce912ef4143abaf5cf96988d5a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "270d819d1b856bb1f81e6327473808b6e273ce912ef4143abaf5cf96988d5a2e", kill_on_drop: false }`
[INFO] [stdout] 270d819d1b856bb1f81e6327473808b6e273ce912ef4143abaf5cf96988d5a2e
