[INFO] fetching crate rx_gtk 0.1.1...
[INFO] testing rx_gtk-0.1.1 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate rx_gtk 0.1.1 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate rx_gtk 0.1.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rx_gtk 0.1.1
[INFO] finished tweaking crates.io crate rx_gtk 0.1.1
[INFO] tweaked toml for crates.io crate rx_gtk 0.1.1 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gobject-sys v0.7.0
[INFO] [stderr]   Downloaded gdk-pixbuf v0.5.0
[INFO] [stderr]   Downloaded atk-sys v0.7.0
[INFO] [stderr]   Downloaded cairo-rs v0.5.0
[INFO] [stderr]   Downloaded cairo-sys-rs v0.7.0
[INFO] [stderr]   Downloaded pango v0.5.0
[INFO] [stderr]   Downloaded gdk-sys v0.7.0
[INFO] [stderr]   Downloaded gtk-sys v0.7.0
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.7.0
[INFO] [stderr]   Downloaded glib-sys v0.7.0
[INFO] [stderr]   Downloaded gio-sys v0.7.0
[INFO] [stderr]   Downloaded gio v0.5.1
[INFO] [stderr]   Downloaded gdk v0.9.0
[INFO] [stderr]   Downloaded pango-sys v0.7.0
[INFO] [stderr]   Downloaded glib v0.6.1
[INFO] [stderr]   Downloaded gtk v0.5.0
[INFO] [stderr]   Downloaded rxrs v0.1.0-alpha4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80abec3c8a35460e1667b79865c2aa65de8b3447bfbdd07edfe440e6c495529a
[INFO] running `Command { std: "docker" "start" "-a" "80abec3c8a35460e1667b79865c2aa65de8b3447bfbdd07edfe440e6c495529a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80abec3c8a35460e1667b79865c2aa65de8b3447bfbdd07edfe440e6c495529a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80abec3c8a35460e1667b79865c2aa65de8b3447bfbdd07edfe440e6c495529a", kill_on_drop: false }`
[INFO] [stdout] 80abec3c8a35460e1667b79865c2aa65de8b3447bfbdd07edfe440e6c495529a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89a49b27c70845c12113cb0907cb7525efde20eea7e5d1973dd1300edfb85703
[INFO] running `Command { std: "docker" "start" "-a" "89a49b27c70845c12113cb0907cb7525efde20eea7e5d1973dd1300edfb85703", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling version-compare v0.0.11
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling gio v0.5.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.5.0
[INFO] [stderr]    Compiling fragile v0.3.0
[INFO] [stderr]    Compiling cairo-rs v0.5.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling gdk v0.9.0
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling gtk v0.5.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling rxrs v0.1.0-alpha4
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling cfg-expr v0.8.1
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha4/src/lib.rs:1:58
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fn_traits, unboxed_closures, integer_atomics, optin_builtin_traits, fnbox,
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `auto_traits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha4/src/unsub.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha4/src/scheduler/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha4/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(fn_traits, unboxed_closures, integer_atomics, optin_builtin_traits, fnbox,
[INFO] [stdout] 2 | |     test, cell_update, box_syntax, coerce_unsized, unsize,
[INFO] [stdout] 3 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha4/src/util/yesno.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub unsafe auto trait No {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #13231 <https://github.com/rust-lang/rust/issues/13231> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha4/src/util/yesno.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl !No for YES {}
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rxrs` due to 7 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "89a49b27c70845c12113cb0907cb7525efde20eea7e5d1973dd1300edfb85703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89a49b27c70845c12113cb0907cb7525efde20eea7e5d1973dd1300edfb85703", kill_on_drop: false }`
[INFO] [stdout] 89a49b27c70845c12113cb0907cb7525efde20eea7e5d1973dd1300edfb85703
