[INFO] fetching crate xactor 0.7.11...
[INFO] checking xactor-0.7.11 against master#16b569057e4d1591b4bee05f10df34000308dedc for pr-127827
[INFO] extracting crate xactor 0.7.11 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate xactor 0.7.11 on toolchain 16b569057e4d1591b4bee05f10df34000308dedc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xactor 0.7.11
[INFO] finished tweaking crates.io crate xactor 0.7.11
[INFO] tweaked toml for crates.io crate xactor 0.7.11 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate xactor 0.7.11 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" "+16b569057e4d1591b4bee05f10df34000308dedc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xactor-derive v0.7.1
[INFO] [stderr]   Downloaded tokio-macros v1.0.0
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.69
[INFO] [stderr]   Downloaded anyhow v1.0.37
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.69
[INFO] [stderr]   Downloaded async-attributes v1.1.1
[INFO] [stderr]   Downloaded async-global-executor v1.4.3
[INFO] [stderr]   Downloaded js-sys v0.3.46
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.19
[INFO] [stderr]   Downloaded async-std v1.8.0
[INFO] [stderr]   Downloaded tokio v1.0.1
[INFO] [stderr]   Downloaded web-sys v0.3.46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9cd01a723c995cb11c77272aa6534495aa1d9ed59899b7ef66077a684e5b77ca
[INFO] running `Command { std: "docker" "start" "-a" "9cd01a723c995cb11c77272aa6534495aa1d9ed59899b7ef66077a684e5b77ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cd01a723c995cb11c77272aa6534495aa1d9ed59899b7ef66077a684e5b77ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cd01a723c995cb11c77272aa6534495aa1d9ed59899b7ef66077a684e5b77ca", kill_on_drop: false }`
[INFO] [stdout] 9cd01a723c995cb11c77272aa6534495aa1d9ed59899b7ef66077a684e5b77ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8c896b7b261e0d06bc60ce62792434ce9a616587c59af6917e7e4249054f61b
[INFO] running `Command { std: "docker" "start" "-a" "d8c896b7b261e0d06bc60ce62792434ce9a616587c59af6917e7e4249054f61b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling xactor-derive v0.7.1
[INFO] [stderr]     Checking async-std v1.8.0
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking xactor v0.7.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/supervisor_clear_send_later.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Ping(&'static str);
[INFO] [stdout]    |        ---- ^^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Ping` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.76s
[INFO] running `Command { std: "docker" "inspect" "d8c896b7b261e0d06bc60ce62792434ce9a616587c59af6917e7e4249054f61b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8c896b7b261e0d06bc60ce62792434ce9a616587c59af6917e7e4249054f61b", kill_on_drop: false }`
[INFO] [stdout] d8c896b7b261e0d06bc60ce62792434ce9a616587c59af6917e7e4249054f61b
[INFO] checking xactor-0.7.11 against try#8a6640bd72b80869b16392026cb3aa8ce8e3f9b7 for pr-127827
[INFO] extracting crate xactor 0.7.11 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate xactor 0.7.11 on toolchain 8a6640bd72b80869b16392026cb3aa8ce8e3f9b7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xactor 0.7.11
[INFO] finished tweaking crates.io crate xactor 0.7.11
[INFO] tweaked toml for crates.io crate xactor 0.7.11 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate xactor 0.7.11 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" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46f76cd6f095a296c31176ef31fa1c200784a6da0b6cb3559d776c2f92b02b4d
[INFO] running `Command { std: "docker" "start" "-a" "46f76cd6f095a296c31176ef31fa1c200784a6da0b6cb3559d776c2f92b02b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46f76cd6f095a296c31176ef31fa1c200784a6da0b6cb3559d776c2f92b02b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f76cd6f095a296c31176ef31fa1c200784a6da0b6cb3559d776c2f92b02b4d", kill_on_drop: false }`
[INFO] [stdout] 46f76cd6f095a296c31176ef31fa1c200784a6da0b6cb3559d776c2f92b02b4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20f0b829766b6bc074a733c97326d56444f762d372b072b78ab704fe3dab3cd2
[INFO] running `Command { std: "docker" "start" "-a" "20f0b829766b6bc074a733c97326d56444f762d372b072b78ab704fe3dab3cd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling xactor-derive v0.7.1
[INFO] [stderr]     Checking async-std v1.8.0
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking xactor v0.7.11 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/subscriber.rs:58:34
[INFO] [stdout]    |
[INFO] [stdout] 58 |             .map(|actor| async { actor.start().await.unwrap() });
[INFO] [stdout]    |                                  ^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/supervisor_clear_send_later.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Ping(&'static str);
[INFO] [stdout]    |        ---- ^^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Ping` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xactor` (example "subscriber") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "20f0b829766b6bc074a733c97326d56444f762d372b072b78ab704fe3dab3cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f0b829766b6bc074a733c97326d56444f762d372b072b78ab704fe3dab3cd2", kill_on_drop: false }`
[INFO] [stdout] 20f0b829766b6bc074a733c97326d56444f762d372b072b78ab704fe3dab3cd2