[INFO] fetching crate monad_macros 0.0.1...
[INFO] testing monad_macros-0.0.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate monad_macros 0.0.1 into /workspace/builds/worker-91/source
[INFO] validating manifest of crates.io crate monad_macros 0.0.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate monad_macros 0.0.1
[INFO] finished tweaking crates.io crate monad_macros 0.0.1
[INFO] tweaked toml for crates.io crate monad_macros 0.0.1 written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44cf88f7ee65dc9ac5153b6239e02e9fdb980ff812006ad6b33c20b526840166
[INFO] running `Command { std: "docker" "start" "-a" "44cf88f7ee65dc9ac5153b6239e02e9fdb980ff812006ad6b33c20b526840166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44cf88f7ee65dc9ac5153b6239e02e9fdb980ff812006ad6b33c20b526840166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44cf88f7ee65dc9ac5153b6239e02e9fdb980ff812006ad6b33c20b526840166", kill_on_drop: false }`
[INFO] [stdout] 44cf88f7ee65dc9ac5153b6239e02e9fdb980ff812006ad6b33c20b526840166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b0be897371369c17b2631b3301ca8d47ea59419eb0b6ca877e592fc4e4bee64
[INFO] running `Command { std: "docker" "start" "-a" "2b0be897371369c17b2631b3301ca8d47ea59419eb0b6ca877e592fc4e4bee64", kill_on_drop: false }`
[INFO] [stderr]    Compiling monad_macros v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `$p:pat` is followed by `:`, which is not allowed for `pat` fragments
[INFO] [stdout]   --> src/lib.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |         $p: pat : $ty: ty <- $e: expr ; $( $t: tt )*
[INFO] [stdout]    |                 ^ not allowed after `pat` fragments
[INFO] [stdout]    |
[INFO] [stdout]    = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `$ty:ty` is followed by `<-`, which is not allowed for `ty` fragments
[INFO] [stdout]   --> src/lib.rs:16:27
[INFO] [stdout]    |
[INFO] [stdout] 16 |         $p: pat : $ty: ty <- $e: expr ; $( $t: tt )*
[INFO] [stdout]    |                           ^^ not allowed after `ty` fragments
[INFO] [stdout]    |
[INFO] [stdout]    = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `$p:pat` is followed by `<-`, which is not allowed for `pat` fragments
[INFO] [stdout]   --> src/lib.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |         $p: pat <- $e: expr ; $( $t: tt )*
[INFO] [stdout]    |                 ^^ not allowed after `pat` fragments
[INFO] [stdout]    |
[INFO] [stdout]    = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_rules)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `macro_rules` has been stable since 1.0.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `macro_rules` has been stable since 1.0.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_rules)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning 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 `monad_macros` due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "2b0be897371369c17b2631b3301ca8d47ea59419eb0b6ca877e592fc4e4bee64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b0be897371369c17b2631b3301ca8d47ea59419eb0b6ca877e592fc4e4bee64", kill_on_drop: false }`
[INFO] [stdout] 2b0be897371369c17b2631b3301ca8d47ea59419eb0b6ca877e592fc4e4bee64