[INFO] fetching crate size-of-trait 1.1.3...
[INFO] testing size-of-trait-1.1.3 against 1.91.0 for beta-1.92-2
[INFO] extracting crate size-of-trait 1.1.3 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate size-of-trait 1.1.3
[INFO] finished tweaking crates.io crate size-of-trait 1.1.3
[INFO] tweaked toml for crates.io crate size-of-trait 1.1.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate size-of-trait 1.1.3 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45d45965583e9c061ff9d45034c48c3394f0e787928b1fc9e2ce284fa950ab75
[INFO] running `Command { std: "docker" "start" "-a" "45d45965583e9c061ff9d45034c48c3394f0e787928b1fc9e2ce284fa950ab75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45d45965583e9c061ff9d45034c48c3394f0e787928b1fc9e2ce284fa950ab75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45d45965583e9c061ff9d45034c48c3394f0e787928b1fc9e2ce284fa950ab75", kill_on_drop: false }`
[INFO] [stdout] 45d45965583e9c061ff9d45034c48c3394f0e787928b1fc9e2ce284fa950ab75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 970caeb0a10a1cc6c19c019ed54e82b1bbb3289c4972118cc71a53b9b9b6c8fb
[INFO] running `Command { std: "docker" "start" "-a" "970caeb0a10a1cc6c19c019ed54e82b1bbb3289c4972118cc71a53b9b9b6c8fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling size-of-trait v1.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "970caeb0a10a1cc6c19c019ed54e82b1bbb3289c4972118cc71a53b9b9b6c8fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "970caeb0a10a1cc6c19c019ed54e82b1bbb3289c4972118cc71a53b9b9b6c8fb", kill_on_drop: false }`
[INFO] [stdout] 970caeb0a10a1cc6c19c019ed54e82b1bbb3289c4972118cc71a53b9b9b6c8fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1b6f9cb605e67a6f4a66686672a00f5a94fd6c4892935273a6c535b2101e63f
[INFO] running `Command { std: "docker" "start" "-a" "e1b6f9cb605e67a6f4a66686672a00f5a94fd6c4892935273a6c535b2101e63f", kill_on_drop: false }`
[INFO] [stderr]    Compiling size-of-trait v1.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(test, feature(coroutines, coroutine_trait))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks
[INFO] [stdout]   --> src/tests.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         yield a;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `#[coroutine]` to make this closure a coroutine
[INFO] [stdout]    |
[INFO] [stdout] 19 |     #[coroutine] || {
[INFO] [stdout]    |     ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `size-of-trait` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e1b6f9cb605e67a6f4a66686672a00f5a94fd6c4892935273a6c535b2101e63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1b6f9cb605e67a6f4a66686672a00f5a94fd6c4892935273a6c535b2101e63f", kill_on_drop: false }`
[INFO] [stdout] e1b6f9cb605e67a6f4a66686672a00f5a94fd6c4892935273a6c535b2101e63f