[INFO] cloning repository https://github.com/Kimundi/do_syntax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kimundi/do_syntax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKimundi%2Fdo_syntax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKimundi%2Fdo_syntax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c0308322cd8c6bef268bfe8e615fcf80c12e148
[INFO] testing Kimundi/do_syntax against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKimundi%2Fdo_syntax" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kimundi/do_syntax on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kimundi/do_syntax
[INFO] finished tweaking git repo https://github.com/Kimundi/do_syntax
[INFO] tweaked toml for git repo https://github.com/Kimundi/do_syntax written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/Kimundi/do_syntax already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2efa6405c1120fb3d24a9b884f16d66f316184e14f84a691b1027806e42e4be5
[INFO] running `Command { std: "docker" "start" "-a" "2efa6405c1120fb3d24a9b884f16d66f316184e14f84a691b1027806e42e4be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2efa6405c1120fb3d24a9b884f16d66f316184e14f84a691b1027806e42e4be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2efa6405c1120fb3d24a9b884f16d66f316184e14f84a691b1027806e42e4be5", kill_on_drop: false }`
[INFO] [stdout] 2efa6405c1120fb3d24a9b884f16d66f316184e14f84a691b1027806e42e4be5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7a0223f08310b5bbb0d5401534320fcd490847b0aac80cbb2ec453f24515042
[INFO] running `Command { std: "docker" "start" "-a" "b7a0223f08310b5bbb0d5401534320fcd490847b0aac80cbb2ec453f24515042", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling do_macro v0.1.0 (/opt/rustwide/workdir/do_macro)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> do_macro/src/do_block.rs:296:21
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 let v = value_or_unit(i.expr.as_deref());
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]    --> do_macro/src/do_block.rs:301:37
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 let i = if let Some(label) = &i.label {
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]    --> do_macro/src/do_block.rs:313:37
[INFO] [stdout]     |
[INFO] [stdout] 313 |                 let i = if let Some(label) = &i.label {
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bare_continue`
[INFO] [stdout]    --> do_macro/src/do_block.rs:154:5
[INFO] [stdout]     |
[INFO] [stdout] 154 |     bare_continue: Option<DispatchTargets>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling do_usage v0.1.0 (/opt/rustwide/workdir/do_usage)
[INFO] [stdout] /*
[INFO] [stdout] */
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Return` in this scope
[INFO] [stdout]  --> do_usage/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[do_scope]
[INFO] [stdout]   | ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in the attribute macro `do_scope` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `do_usage` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b7a0223f08310b5bbb0d5401534320fcd490847b0aac80cbb2ec453f24515042", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7a0223f08310b5bbb0d5401534320fcd490847b0aac80cbb2ec453f24515042", kill_on_drop: false }`
[INFO] [stdout] b7a0223f08310b5bbb0d5401534320fcd490847b0aac80cbb2ec453f24515042