[INFO] fetching crate rust_graphics_window 0.1.2...
[INFO] testing rust_graphics_window-0.1.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate rust_graphics_window 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rust_graphics_window 0.1.2 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_graphics_window 0.1.2
[INFO] finished tweaking crates.io crate rust_graphics_window 0.1.2
[INFO] tweaked toml for crates.io crate rust_graphics_window 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate rust_graphics_window 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust_graphics_log v0.1.0
[INFO] [stderr]   Downloaded rust_graphics_library_loader v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aad4192fd4d8bc6b616555a7d3547915f12a466a70a06e34223204baa4ed48e3
[INFO] running `Command { std: "docker" "start" "-a" "aad4192fd4d8bc6b616555a7d3547915f12a466a70a06e34223204baa4ed48e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aad4192fd4d8bc6b616555a7d3547915f12a466a70a06e34223204baa4ed48e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aad4192fd4d8bc6b616555a7d3547915f12a466a70a06e34223204baa4ed48e3", kill_on_drop: false }`
[INFO] [stdout] aad4192fd4d8bc6b616555a7d3547915f12a466a70a06e34223204baa4ed48e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b278da129372537f62f5a418c425ed9a367c5a36a57b026bbc3763f56c84f00b
[INFO] running `Command { std: "docker" "start" "-a" "b278da129372537f62f5a418c425ed9a367c5a36a57b026bbc3763f56c84f00b", 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]    Compiling rust_graphics_log v0.1.0
[INFO] [stderr]    Compiling rust_graphics_library_loader v0.1.3
[INFO] [stderr]    Compiling rust_graphics_window v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Index1`
[INFO] [stdout]    --> src/linux/xcb.rs:145:5
[INFO] [stdout]     |
[INFO] [stdout] 145 |     Index1 = 1,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Index2`
[INFO] [stdout]    --> src/linux/xcb.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     Index2 = 2,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Index3`
[INFO] [stdout]    --> src/linux/xcb.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 147 |     Index3 = 3,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_graphics_window` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b278da129372537f62f5a418c425ed9a367c5a36a57b026bbc3763f56c84f00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b278da129372537f62f5a418c425ed9a367c5a36a57b026bbc3763f56c84f00b", kill_on_drop: false }`
[INFO] [stdout] b278da129372537f62f5a418c425ed9a367c5a36a57b026bbc3763f56c84f00b