[INFO] fetching crate tari_pubsub 0.3.0...
[INFO] checking tari_pubsub-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tari_pubsub 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate tari_pubsub 0.3.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate tari_pubsub 0.3.0
[INFO] finished tweaking crates.io crate tari_pubsub 0.3.0
[INFO] tweaked toml for crates.io crate tari_pubsub 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages
[INFO] [stderr]       Adding arc-swap v0.4.8 (latest: v1.7.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tari_broadcast_channel v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1b99b14b4a995815dbce8cdf5bd6a7d9ffe69bb3fa4d0cca004d7dfa1875514
[INFO] running `Command { std: "docker" "start" "-a" "a1b99b14b4a995815dbce8cdf5bd6a7d9ffe69bb3fa4d0cca004d7dfa1875514", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1b99b14b4a995815dbce8cdf5bd6a7d9ffe69bb3fa4d0cca004d7dfa1875514", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b99b14b4a995815dbce8cdf5bd6a7d9ffe69bb3fa4d0cca004d7dfa1875514", kill_on_drop: false }`
[INFO] [stdout] a1b99b14b4a995815dbce8cdf5bd6a7d9ffe69bb3fa4d0cca004d7dfa1875514
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39b6eec716d28ed9db5319db1eae46b527aceb96de4597d01216f02f72941e38
[INFO] running `Command { std: "docker" "start" "-a" "39b6eec716d28ed9db5319db1eae46b527aceb96de4597d01216f02f72941e38", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tari_broadcast_channel v0.3.0
[INFO] [stderr]     Checking tari_pubsub v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `future` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:24:15
[INFO] [stdout]    |
[INFO] [stdout] 24 | use futures::{future, prelude::*, stream::Fuse};
[INFO] [stdout]    |               ^^^^^^  ---------- the item `future` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `future` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:24:15
[INFO] [stdout]    |
[INFO] [stdout] 24 | use futures::{future, prelude::*, stream::Fuse};
[INFO] [stdout]    |               ^^^^^^  ---------- the item `future` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `b` is never read
[INFO] [stdout]    --> src/lib.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         struct Dummy {
[INFO] [stdout]     |                ----- field in this struct
[INFO] [stdout] 116 |             a: u32,
[INFO] [stdout] 117 |             b: String,
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Dummy` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.13s
[INFO] running `Command { std: "docker" "inspect" "39b6eec716d28ed9db5319db1eae46b527aceb96de4597d01216f02f72941e38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b6eec716d28ed9db5319db1eae46b527aceb96de4597d01216f02f72941e38", kill_on_drop: false }`
[INFO] [stdout] 39b6eec716d28ed9db5319db1eae46b527aceb96de4597d01216f02f72941e38