[INFO] fetching crate ys-kcp 1.2.2...
[INFO] testing ys-kcp-1.2.2 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate ys-kcp 1.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ys-kcp 1.2.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ys-kcp 1.2.2
[INFO] tweaked toml for crates.io crate ys-kcp 1.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ys-kcp 1.2.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ys-kcp 1.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backtrace v0.3.73
[INFO] [stderr]   Downloaded sha1_smol v1.0.0
[INFO] [stderr]   Downloaded const_fn v0.4.10
[INFO] [stderr]   Downloaded xxhash-rust v0.8.10
[INFO] [stderr]   Downloaded winapi-util v0.1.8
[INFO] [stderr]   Downloaded addr2line v0.22.0
[INFO] [stderr]   Downloaded bytes v1.6.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded serde_derive v1.0.201
[INFO] [stderr]   Downloaded serde v1.0.201
[INFO] [stderr]   Downloaded memchr v2.7.2
[INFO] [stderr]   Downloaded cc v1.2.10
[INFO] [stderr]   Downloaded serde_json v1.0.117
[INFO] [stderr]   Downloaded regex v1.10.4
[INFO] [stderr]   Downloaded syn v2.0.63
[INFO] [stderr]   Downloaded regex-syntax v0.8.3
[INFO] [stderr]   Downloaded regex-automata v0.4.6
[INFO] [stderr]   Downloaded libc v0.2.154
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2
[INFO] running `Command { std: "docker" "start" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.6.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling ys-kcp v1.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u32>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]     --> src/kcp.rs:1012:34
[INFO] [stdout]      |
[INFO] [stdout] 1012 |         let mut tm_packet = u32::max_value();
[INFO] [stdout]      |                                  ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u32>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]     --> src/kcp.rs:1302:18
[INFO] [stdout]      |
[INFO] [stdout] 1302 |             u32::max_value()
[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 `ys-kcp` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2", kill_on_drop: false }`
[INFO] [stdout] 0edb38aeb60d2ad8ecdd7a4fe3c3cbe3770e9c8bb1148acace0b4ae65394fbd2
