[INFO] fetching crate manyhow 0.14.1...
[INFO] checking manyhow-0.14.1 against a7c37f9f0ee5e93396106e9de20f4a86b4154e63 for pr-129249-4
[INFO] extracting crate manyhow 0.14.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate manyhow 0.14.1
[INFO] finished tweaking crates.io crate manyhow 0.14.1
[INFO] tweaked toml for crates.io crate manyhow 0.14.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate manyhow 0.14.1 on toolchain a7c37f9f0ee5e93396106e9de20f4a86b4154e63
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7c37f9f0ee5e93396106e9de20f4a86b4154e63" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate manyhow 0.14.1 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" "+a7c37f9f0ee5e93396106e9de20f4a86b4154e63" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling_core v0.24.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd
[INFO] running `Command { std: "docker" "start" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd", 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" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd" "/opt/rustwide/cargo-home/bin/cargo" "+a7c37f9f0ee5e93396106e9de20f4a86b4154e63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd", 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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd" "/opt/rustwide/cargo-home/bin/cargo" "+a7c37f9f0ee5e93396106e9de20f4a86b4154e63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling smallvec v1.11.0
[INFO] [stderr]    Compiling proc-macro-utils v0.10.0
[INFO] [stderr]     Checking syn v3.0.3
[INFO] [stderr]    Compiling manyhow-macros v0.14.1
[INFO] [stderr]     Checking manyhow v0.14.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:298:99
[INFO] [stdout]     |
[INFO] [stdout] 270 | / macro_rules! __macro_handler {
[INFO] [stdout] 271 | |     ($name:ident; $($(#attr=$attr:tt)? $n:ident: $input:expr),+; $impl:expr$(; dummy:$dummy:expr)?) => {
[INFO] [stdout] 272 | |         $crate::__macro_handler! {! $name; $($(#attr=$attr)? $n: $input.clone()),+; $impl $(; $crate::__private::Some($dummy))?}
[INFO] [stdout] 273 | |     };
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |                             (&$crate::__private::WhatType::from(&error)).manyhow_to_tokens(error, &mut tokens);
[INFO] [stdout]     | |                                                                                            -----  ^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     | |                                                                                            |
[INFO] [stdout]     | |                                                                                            any code following this expression is unreachable
[INFO] [stdout] ...   |
[INFO] [stdout] 306 | |     }};
[INFO] [stdout] 307 | | }
[INFO] [stdout]     | |_- this warning originates in the macro `$crate::__macro_handler` which comes from the expansion of the macro `function`
[INFO] [stdout] ...
[INFO] [stdout] 728 |           function!(quote!(hello), |input: TokenStream| -> TokenStream { input });
[INFO] [stdout]     |           ----------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:298:99
[INFO] [stdout]     |
[INFO] [stdout] 270 | / macro_rules! __macro_handler {
[INFO] [stdout] 271 | |     ($name:ident; $($(#attr=$attr:tt)? $n:ident: $input:expr),+; $impl:expr$(; dummy:$dummy:expr)?) => {
[INFO] [stdout] 272 | |         $crate::__macro_handler! {! $name; $($(#attr=$attr)? $n: $input.clone()),+; $impl $(; $crate::__private::Some($dummy))?}
[INFO] [stdout] 273 | |     };
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |                             (&$crate::__private::WhatType::from(&error)).manyhow_to_tokens(error, &mut tokens);
[INFO] [stdout]     | |                                                                                            -----  ^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     | |                                                                                            |
[INFO] [stdout]     | |                                                                                            any code following this expression is unreachable
[INFO] [stdout] ...   |
[INFO] [stdout] 306 | |     }};
[INFO] [stdout] 307 | | }
[INFO] [stdout]     | |_- this warning originates in the macro `$crate::__macro_handler` which comes from the expansion of the macro `function`
[INFO] [stdout] ...
[INFO] [stdout] 732 |           let _: TokenStream1 = function!(
[INFO] [stdout]     |  _______________________________-
[INFO] [stdout] 733 | |             TokenStream1::from(quote!(hello)),
[INFO] [stdout] 734 | |             |input: TokenStream1| -> TokenStream1 { input }
[INFO] [stdout] 735 | |         );
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:298:99
[INFO] [stdout]     |
[INFO] [stdout] 270 | / macro_rules! __macro_handler {
[INFO] [stdout] 271 | |     ($name:ident; $($(#attr=$attr:tt)? $n:ident: $input:expr),+; $impl:expr$(; dummy:$dummy:expr)?) => {
[INFO] [stdout] 272 | |         $crate::__macro_handler! {! $name; $($(#attr=$attr)? $n: $input.clone()),+; $impl $(; $crate::__private::Some($dummy))?}
[INFO] [stdout] 273 | |     };
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |                             (&$crate::__private::WhatType::from(&error)).manyhow_to_tokens(error, &mut tokens);
[INFO] [stdout]     | |                                                                                            -----  ^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     | |                                                                                            |
[INFO] [stdout]     | |                                                                                            any code following this expression is unreachable
[INFO] [stdout] ...   |
[INFO] [stdout] 306 | |     }};
[INFO] [stdout] 307 | | }
[INFO] [stdout]     | |_- this warning originates in the macro `$crate::__macro_handler` which comes from the expansion of the macro `function`
[INFO] [stdout] ...
[INFO] [stdout] 741 |           let output: TokenStream = function!(
[INFO] [stdout]     |  ___________________________________-
[INFO] [stdout] 742 | |             #[as_dummy]
[INFO] [stdout] 743 | |             quote!(hello;),
[INFO] [stdout] 744 | |             |input: syn::LitInt| -> TokenStream { input.into_token_stream() }
[INFO] [stdout] 745 | |         );
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:298:99
[INFO] [stdout]     |
[INFO] [stdout] 270 | / macro_rules! __macro_handler {
[INFO] [stdout] 271 | |     ($name:ident; $($(#attr=$attr:tt)? $n:ident: $input:expr),+; $impl:expr$(; dummy:$dummy:expr)?) => {
[INFO] [stdout] 272 | |         $crate::__macro_handler! {! $name; $($(#attr=$attr)? $n: $input.clone()),+; $impl $(; $crate::__private::Some($dummy))?}
[INFO] [stdout] 273 | |     };
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |                             (&$crate::__private::WhatType::from(&error)).manyhow_to_tokens(error, &mut tokens);
[INFO] [stdout]     | |                                                                                            -----  ^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     | |                                                                                            |
[INFO] [stdout]     | |                                                                                            any code following this expression is unreachable
[INFO] [stdout] ...   |
[INFO] [stdout] 306 | |     }};
[INFO] [stdout] 307 | | }
[INFO] [stdout]     | |_- this warning originates in the macro `$crate::__macro_handler` which comes from the expansion of the macro `function`
[INFO] [stdout] ...
[INFO] [stdout] 750 |           let output: TokenStream = function!(quote!(20), |_input: syn::LitInt| -> syn::Ident {
[INFO] [stdout]     |  ___________________________________-
[INFO] [stdout] 751 | |             syn::parse_quote!(hello)
[INFO] [stdout] 752 | |         });
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.98s
[INFO] running `Command { std: "docker" "inspect" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd", kill_on_drop: false }`
[INFO] [stdout] 988cf69d5626ebedb380d6d41baf1052ea1b1f0c67aaeb1a34ab5bd33204a9fd
