[INFO] fetching crate named-block 0.3.1...
[INFO] checking named-block-0.3.1 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate named-block 0.3.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate named-block 0.3.1 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate named-block 0.3.1
[INFO] finished tweaking crates.io crate named-block 0.3.1
[INFO] tweaked toml for crates.io crate named-block 0.3.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bd4e12b766e400dbcfdd87c0fd26fadf35ada3915b628005da4c8b34676d60f
[INFO] running `Command { std: "docker" "start" "-a" "5bd4e12b766e400dbcfdd87c0fd26fadf35ada3915b628005da4c8b34676d60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bd4e12b766e400dbcfdd87c0fd26fadf35ada3915b628005da4c8b34676d60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bd4e12b766e400dbcfdd87c0fd26fadf35ada3915b628005da4c8b34676d60f", kill_on_drop: false }`
[INFO] [stdout] 5bd4e12b766e400dbcfdd87c0fd26fadf35ada3915b628005da4c8b34676d60f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4ff18ea0a56b9c7251c32e24b9b9765e644b872c9202c0f2655567ca3d448e0
[INFO] running `Command { std: "docker" "start" "-a" "e4ff18ea0a56b9c7251c32e24b9b9765e644b872c9202c0f2655567ca3d448e0", kill_on_drop: false }`
[INFO] [stderr]     Checking static-cond v0.1.1
[INFO] [stderr]     Checking named-block v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: label name `'b` shadows a label name that is already in scope
[INFO] [stdout]    --> src/lib.rs:362:17
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 block!('b: {
[INFO] [stdout]     |                        -- first declared here
[INFO] [stdout] ...
[INFO] [stdout] 362 |                 'b: while false {
[INFO] [stdout]     |                 ^^ label `'b` already in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__static_cond` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'a` shadows a label name that is already in scope
[INFO] [stdout]    --> src/lib.rs:392:31
[INFO] [stdout]     |
[INFO] [stdout] 391 |         assert_eq!(42, block!('a: loop { break 'a 42 }));
[INFO] [stdout]     |                               -- first declared here
[INFO] [stdout] 392 |         assert_eq!((), block!('a: {})); // make sure it works with no breaks
[INFO] [stdout]     |                               ^^ label `'a` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'a` shadows a label name that is already in scope
[INFO] [stdout]    --> src/lib.rs:396:16
[INFO] [stdout]     |
[INFO] [stdout] 391 |         assert_eq!(42, block!('a: loop { break 'a 42 }));
[INFO] [stdout]     |                               -- first declared here
[INFO] [stdout] ...
[INFO] [stdout] 396 |         block!('a: loop {
[INFO] [stdout]     |                ^^ label `'a` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: label name `'a` shadows a label name that is already in scope
[INFO] [stdout]    --> src/lib.rs:396:16
[INFO] [stdout]     |
[INFO] [stdout] 392 |         assert_eq!((), block!('a: {})); // make sure it works with no breaks
[INFO] [stdout]     |                               -- first declared here
[INFO] [stdout] ...
[INFO] [stdout] 396 |         block!('a: loop {
[INFO] [stdout]     |                ^^ label `'a` already in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 | /                     $ret = $out;
[INFO] [stdout] 103 | |                     break $life;
[INFO] [stdout] 104 | |                 }
[INFO] [stdout] 105 | |                 $ret
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |     (@scan {} $life:tt $ret:ident () -> ($($out:tt)*) (() $lp:tt $init:tt)) => {
[INFO] [stdout] 135 | |         block!(@wrap $life $lp $ret $init { $($out)* })
[INFO] [stdout]     | |______________________________________________________^ unreachable expression
[INFO] [stdout] ...
[INFO] [stdout] 174 |                   block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* { $ret = $e; break $life2; }) ($stack $lp ()))
[INFO] [stdout]     |  _______________________________________________________________________________________-
[INFO] [stdout] 175 | |             } else {
[INFO] [stdout] 176 | |                 block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* break $life2 $e;) ($stack $lp ()))
[INFO] [stdout] 177 | |             }
[INFO] [stdout] ...   |
[INFO] [stdout] 334 |           let x = block!('b: {
[INFO] [stdout]     |  _________________-
[INFO] [stdout] 335 |               if flag { break 'b "early exit"; }
[INFO] [stdout] 336 |               let _y = block!('c: {
[INFO] [stdout] 337 |                   if flag { break 'b "inner early exit"; };
[INFO] [stdout] ...
[INFO] [stdout] 369 |                   x + block!('d: {
[INFO] [stdout] 370 | |                     break 'd 42;
[INFO] [stdout]     | |____________________________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 375 | |             "normal exit"
[INFO] [stdout] 376 | |         });
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 | /                     $ret = $out;
[INFO] [stdout] 103 | |                     break $life;
[INFO] [stdout] 104 | |                 }
[INFO] [stdout] 105 | |                 $ret
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |     (@scan {} $life:tt $ret:ident () -> ($($out:tt)*) (() $lp:tt $init:tt)) => {
[INFO] [stdout] 135 | |         block!(@wrap $life $lp $ret $init { $($out)* })
[INFO] [stdout]     | |______________________________________________________^ unreachable expression
[INFO] [stdout] ...
[INFO] [stdout] 197 |                   block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* continue $life2;) ($stack () $init))
[INFO] [stdout]     |  __________________________________________________________________________-
[INFO] [stdout] 198 | |             }
[INFO] [stdout] 199 | |         }
[INFO] [stdout] 200 | |     };
[INFO] [stdout] ...   |
[INFO] [stdout] 381 | /             block!('d: {
[INFO] [stdout] 382 |                   //continue; //~ERROR NoBareContinueInNamedBlock
[INFO] [stdout] 383 |                   //continue 'd; //~ERROR NoMatchedContinueInNamedBlock
[INFO] [stdout] 384 | |                 continue 'e;
[INFO] [stdout]     | |___________________________- any code following this expression is unreachable
[INFO] [stdout] 385 | |             });
[INFO] [stdout]     | |_______________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 | /                     $ret = $out;
[INFO] [stdout] 103 | |                     break $life;
[INFO] [stdout] 104 | |                 }
[INFO] [stdout] 105 | |                 $ret
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |     (@scan {} $life:tt $ret:ident () -> ($($out:tt)*) (() $lp:tt $init:tt)) => {
[INFO] [stdout] 135 | |         block!(@wrap $life $lp $ret $init { $($out)* })
[INFO] [stdout]     | |______________________________________________________^ unreachable expression
[INFO] [stdout] ...
[INFO] [stdout] 174 |                   block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* { $ret = $e; break $life2; }) ($stack $lp ()))
[INFO] [stdout]     |  _______________________________________________________________________________________-
[INFO] [stdout] 175 | |             } else {
[INFO] [stdout] 176 | |                 block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* break $life2 $e;) ($stack $lp ()))
[INFO] [stdout] 177 | |             }
[INFO] [stdout] ...   |
[INFO] [stdout] 334 |           let x = block!('b: {
[INFO] [stdout]     |  _________________-
[INFO] [stdout] 335 |               if flag { break 'b "early exit"; }
[INFO] [stdout] 336 |               let _y = block!('c: {
[INFO] [stdout] 337 |                   if flag { break 'b "inner early exit"; };
[INFO] [stdout] ...
[INFO] [stdout] 345 |                       block!('b: {
[INFO] [stdout] 346 | |                         break 'b 42;
[INFO] [stdout]     | |________________________________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 375 | |             "normal exit"
[INFO] [stdout] 376 | |         });
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 | /                     $ret = $out;
[INFO] [stdout] 103 | |                     break $life;
[INFO] [stdout] 104 | |                 }
[INFO] [stdout] 105 | |                 $ret
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |     (@scan {} $life:tt $ret:ident () -> ($($out:tt)*) (() $lp:tt $init:tt)) => {
[INFO] [stdout] 135 | |         block!(@wrap $life $lp $ret $init { $($out)* })
[INFO] [stdout]     | |______________________________________________________^ unreachable expression
[INFO] [stdout] ...
[INFO] [stdout] 174 |                   block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* { $ret = $e; break $life2; }) ($stack $lp ()))
[INFO] [stdout]     |  _______________________________________________________________________________________-
[INFO] [stdout] 175 | |             } else {
[INFO] [stdout] 176 | |                 block!(@scan $paren $life1 $ret ($($tail)*) -> ($($out)* break $life2 $e;) ($stack $lp ()))
[INFO] [stdout] 177 | |             }
[INFO] [stdout] ...   |
[INFO] [stdout] 334 |           let x = block!('b: {
[INFO] [stdout]     |  _________________-
[INFO] [stdout] 335 |               if flag { break 'b "early exit"; }
[INFO] [stdout] 336 |               let _y = block!('c: {
[INFO] [stdout] 337 |                   if flag { break 'b "inner early exit"; };
[INFO] [stdout] ...
[INFO] [stdout] 352 |                   block!('b: {
[INFO] [stdout] 353 | |                     break 'b 42;
[INFO] [stdout]     | |____________________________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 375 | |             "normal exit"
[INFO] [stdout] 376 | |         });
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e4ff18ea0a56b9c7251c32e24b9b9765e644b872c9202c0f2655567ca3d448e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4ff18ea0a56b9c7251c32e24b9b9765e644b872c9202c0f2655567ca3d448e0", kill_on_drop: false }`
[INFO] [stdout] e4ff18ea0a56b9c7251c32e24b9b9765e644b872c9202c0f2655567ca3d448e0