[INFO] fetching crate backoff-futures 0.3.2...
[INFO] checking backoff-futures-0.3.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate backoff-futures 0.3.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate backoff-futures 0.3.2 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] started tweaking crates.io crate backoff-futures 0.3.2
[INFO] finished tweaking crates.io crate backoff-futures 0.3.2
[INFO] tweaked toml for crates.io crate backoff-futures 0.3.2 written to /workspace/builds/worker-4-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 91 packages
[INFO] [stderr]       Adding async-channel v1.9.0 (latest: v2.2.0)
[INFO] [stderr]       Adding backoff v0.2.1 (latest: v0.4.0)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding event-listener v2.5.3 (latest: v5.3.0)
[INFO] [stderr]       Adding fastrand v1.9.0 (latest: v2.0.2)
[INFO] [stderr]       Adding flume v0.9.2 (latest: v0.11.0)
[INFO] [stderr]       Adding futures-lite v1.13.0 (latest: v2.3.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding isahc v0.9.14 (latest: v1.7.2)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding rand v0.7.3 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding spinning_top v0.2.5 (latest: v0.3.0)
[INFO] [stderr]       Adding tokio v0.2.25 (latest: v1.37.0)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 backoff v0.2.1
[INFO] [stderr]   Downloaded curl v0.4.46
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]   Downloaded curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]   Downloaded libz-sys v1.1.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 67f9c3f157b4252a2daed73585641db0f92807a154183b8c374863d8cb1c9d8b
[INFO] running `Command { std: "docker" "start" "-a" "67f9c3f157b4252a2daed73585641db0f92807a154183b8c374863d8cb1c9d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67f9c3f157b4252a2daed73585641db0f92807a154183b8c374863d8cb1c9d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f9c3f157b4252a2daed73585641db0f92807a154183b8c374863d8cb1c9d8b", kill_on_drop: false }`
[INFO] [stdout] 67f9c3f157b4252a2daed73585641db0f92807a154183b8c374863d8cb1c9d8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] be58f01d3d7841d9f7dcca5051c70ec664ae5000bd6c0e8bae277cef4b682181
[INFO] running `Command { std: "docker" "start" "-a" "be58f01d3d7841d9f7dcca5051c70ec664ae5000bd6c0e8bae277cef4b682181", kill_on_drop: false }`
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling curl v0.4.46
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]    Compiling isahc v0.9.14
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking flume v0.9.2
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking backoff v0.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking backoff-futures v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:227:10
[INFO] [stdout]     |
[INFO] [stdout] 227 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `BackoffExt::with_backoff`: Use the built-in `backoff::future` async support
[INFO] [stdout]    --> src/lib.rs:168:49
[INFO] [stdout]     |
[INFO] [stdout] 168 |             futures::executor::block_on(do_work.with_backoff(&mut backoff));
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `BackoffExt::with_backoff`: Use the built-in `backoff::future` async support
[INFO] [stdout]    --> src/lib.rs:180:49
[INFO] [stdout]     |
[INFO] [stdout] 180 |             futures::executor::block_on(do_work.with_backoff(&mut backoff));
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `BackoffExt::with_backoff`: Use the built-in `backoff::future` async support
[INFO] [stdout]    --> src/lib.rs:195:49
[INFO] [stdout]     |
[INFO] [stdout] 195 |             futures::executor::block_on(do_work.with_backoff(&mut backoff));
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `BackoffExt::with_backoff`: Use the built-in `backoff::future` async support
[INFO] [stdout]    --> src/lib.rs:207:49
[INFO] [stdout]     |
[INFO] [stdout] 207 |             futures::executor::block_on(do_work.with_backoff(&mut backoff));
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `BackoffExt::with_backoff_notify`: Use the built-in `backoff::future` async support
[INFO] [stdout]    --> src/lib.rs:238:47
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let result = runtime.block_on(do_work.with_backoff_notify(&mut backoff, |e, d| {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.13s
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "be58f01d3d7841d9f7dcca5051c70ec664ae5000bd6c0e8bae277cef4b682181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be58f01d3d7841d9f7dcca5051c70ec664ae5000bd6c0e8bae277cef4b682181", kill_on_drop: false }`
[INFO] [stdout] be58f01d3d7841d9f7dcca5051c70ec664ae5000bd6c0e8bae277cef4b682181