[INFO] fetching crate lightpanel 0.1.0-prealpha+001...
[INFO] testing lightpanel-0.1.0-prealpha+001 against 1.55.0 for beta-1.56-1
[INFO] extracting crate lightpanel 0.1.0-prealpha+001 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate lightpanel 0.1.0-prealpha+001 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atk v0.6.0
[INFO] [stderr]   Downloaded cairo-rs v0.6.0
[INFO] [stderr]   Downloaded gio-sys v0.8.0
[INFO] [stderr]   Downloaded gdk-pixbuf v0.6.0
[INFO] [stderr]   Downloaded glib-sys v0.8.0
[INFO] [stderr]   Downloaded pango-sys v0.8.0
[INFO] [stderr]   Downloaded gio v0.6.0
[INFO] [stderr]   Downloaded gdk v0.10.0
[INFO] [stderr]   Downloaded gtk-sys v0.8.0
[INFO] [stderr]   Downloaded atk-sys v0.8.0
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.8.0
[INFO] [stderr]   Downloaded gdk-sys v0.8.0
[INFO] [stderr]   Downloaded pango v0.6.0
[INFO] [stderr]   Downloaded glib v0.7.1
[INFO] [stderr]   Downloaded gtk v0.6.0
[INFO] [stderr]   Downloaded runtime-fmt v0.3.0
[INFO] [stderr]   Downloaded gobject-sys v0.8.0
[INFO] [stderr]   Downloaded cairo-sys-rs v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 946417f2c2e7e5d51c003698ba2e592f0b5d4db04c4dd1b5134290beb79a494c
[INFO] running `Command { std: "docker" "start" "-a" "946417f2c2e7e5d51c003698ba2e592f0b5d4db04c4dd1b5134290beb79a494c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "946417f2c2e7e5d51c003698ba2e592f0b5d4db04c4dd1b5134290beb79a494c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "946417f2c2e7e5d51c003698ba2e592f0b5d4db04c4dd1b5134290beb79a494c", kill_on_drop: false }`
[INFO] [stdout] 946417f2c2e7e5d51c003698ba2e592f0b5d4db04c4dd1b5134290beb79a494c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08c33be1b57002f10870e278dda03273229bdb0b565ca09ccb8d4704a0138181
[INFO] running `Command { std: "docker" "start" "-a" "08c33be1b57002f10870e278dda03273229bdb0b565ca09ccb8d4704a0138181", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gio v0.6.0
[INFO] [stderr]    Compiling cairo-rs v0.6.0
[INFO] [stderr]    Compiling pango v0.6.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.6.0
[INFO] [stderr]    Compiling fragile v0.3.0
[INFO] [stderr]    Compiling atk v0.6.0
[INFO] [stderr]    Compiling gdk v0.10.0
[INFO] [stderr]    Compiling 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]    Compiling runtime-fmt v0.3.0
[INFO] [stderr]    Compiling 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 pango-sys v0.8.0
[INFO] [stderr]    Compiling gdk-pixbuf-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 yaml-rust v0.4.5
[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] [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] [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: could not compile `runtime-fmt` due to 13 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "08c33be1b57002f10870e278dda03273229bdb0b565ca09ccb8d4704a0138181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08c33be1b57002f10870e278dda03273229bdb0b565ca09ccb8d4704a0138181", kill_on_drop: false }`
[INFO] [stdout] 08c33be1b57002f10870e278dda03273229bdb0b565ca09ccb8d4704a0138181