[INFO] fetching crate ak-codegen 0.1.1...
[INFO] checking ak-codegen-0.1.1 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate ak-codegen 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ak-codegen 0.1.1 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ak-codegen 0.1.1
[INFO] finished tweaking crates.io crate ak-codegen 0.1.1
[INFO] tweaked toml for crates.io crate ak-codegen 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdef11d52868abb99c468f937137904db764c4ed606c6a9f4b2446576e4936c1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fdef11d52868abb99c468f937137904db764c4ed606c6a9f4b2446576e4936c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdef11d52868abb99c468f937137904db764c4ed606c6a9f4b2446576e4936c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdef11d52868abb99c468f937137904db764c4ed606c6a9f4b2446576e4936c1", kill_on_drop: false }`
[INFO] [stdout] fdef11d52868abb99c468f937137904db764c4ed606c6a9f4b2446576e4936c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b49fe68625a2a7573da48509f16fccdedf57e44c15bfa2b85963df016df18ece
[INFO] running `Command { std: "docker" "start" "-a" "b49fe68625a2a7573da48509f16fccdedf57e44c15bfa2b85963df016df18ece", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking proc-macro2 v1.0.20
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking darling v0.10.2
[INFO] [stderr]     Checking ak-codegen v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         panic!("expr : {}", expr.to_token_stream());
[INFO] [stdout]    |         -------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 48 |         quote!(#expr).into()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `suspend_impl` in this scope
[INFO] [stdout]    --> src/lib.rs:117:21
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let generated = suspend_impl(syn::parse_str(code).unwrap());
[INFO] [stdout]     |                     ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         panic!("expr : {}", expr.to_token_stream());
[INFO] [stdout]    |         -------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 48 |         quote!(#expr).into()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ak-codegen`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b49fe68625a2a7573da48509f16fccdedf57e44c15bfa2b85963df016df18ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b49fe68625a2a7573da48509f16fccdedf57e44c15bfa2b85963df016df18ece", kill_on_drop: false }`
[INFO] [stdout] b49fe68625a2a7573da48509f16fccdedf57e44c15bfa2b85963df016df18ece