[INFO] fetching crate stakker_async_await 0.0.1...
[INFO] checking stakker_async_await-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate stakker_async_await 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate stakker_async_await 0.0.1 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 stakker_async_await 0.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate stakker_async_await 0.0.1
[INFO] tweaked toml for crates.io crate stakker_async_await 0.0.1 written to /workspace/builds/worker-3-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 54 packages
[INFO] [stderr]       Adding generator v0.7.5 (latest: v0.8.1)
[INFO] [stderr]       Adding loom v0.5.6 (latest: v0.7.1)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
[INFO] [stderr]       Adding regex-automata v0.1.10 (latest: v0.4.6)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.3)
[INFO] [stderr]       Adding windows v0.48.0 (latest: v0.54.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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 qcell v0.5.4
[INFO] [stderr]   Downloaded exclusion-set v0.1.2
[INFO] [stderr]   Downloaded stakker v0.2.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5094a522a41a567586bac922bf77df580946d1917af94e0e14fb9bf1f651a706
[INFO] running `Command { std: "docker" "start" "-a" "5094a522a41a567586bac922bf77df580946d1917af94e0e14fb9bf1f651a706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5094a522a41a567586bac922bf77df580946d1917af94e0e14fb9bf1f651a706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5094a522a41a567586bac922bf77df580946d1917af94e0e14fb9bf1f651a706", kill_on_drop: false }`
[INFO] [stdout] 5094a522a41a567586bac922bf77df580946d1917af94e0e14fb9bf1f651a706
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 30a3a6bcc75a47e513b2d1ef7ab1cdd9ef5d5bc7faf630679cae89ddb9643db7
[INFO] running `Command { std: "docker" "start" "-a" "30a3a6bcc75a47e513b2d1ef7ab1cdd9ef5d5bc7faf630679cae89ddb9643db7", kill_on_drop: false }`
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking qcell v0.5.4
[INFO] [stderr]     Checking stakker v0.2.10
[INFO] [stderr]     Checking stakker_async_await v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/futures_core.rs:79:1
[INFO] [stdout]    |
[INFO] [stdout] 79 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/rust_std.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/futures_core.rs:79:1
[INFO] [stdout]    |
[INFO] [stdout] 79 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/rust_std.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "30a3a6bcc75a47e513b2d1ef7ab1cdd9ef5d5bc7faf630679cae89ddb9643db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a3a6bcc75a47e513b2d1ef7ab1cdd9ef5d5bc7faf630679cae89ddb9643db7", kill_on_drop: false }`
[INFO] [stdout] 30a3a6bcc75a47e513b2d1ef7ab1cdd9ef5d5bc7faf630679cae89ddb9643db7
[INFO] checking stakker_async_await-0.0.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate stakker_async_await 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate stakker_async_await 0.0.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stakker_async_await 0.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate stakker_async_await 0.0.1
[INFO] tweaked toml for crates.io crate stakker_async_await 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b63ad49c0ab2288fc9e16b35135d80961c5eb233dc6da792a9c35028cfc5a38
[INFO] running `Command { std: "docker" "start" "-a" "6b63ad49c0ab2288fc9e16b35135d80961c5eb233dc6da792a9c35028cfc5a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b63ad49c0ab2288fc9e16b35135d80961c5eb233dc6da792a9c35028cfc5a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b63ad49c0ab2288fc9e16b35135d80961c5eb233dc6da792a9c35028cfc5a38", kill_on_drop: false }`
[INFO] [stdout] 6b63ad49c0ab2288fc9e16b35135d80961c5eb233dc6da792a9c35028cfc5a38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42f137e86575af9fe92d35e5deba01b297ec1fc54d3f56a009db3a91c0c47bdd
[INFO] running `Command { std: "docker" "start" "-a" "42f137e86575af9fe92d35e5deba01b297ec1fc54d3f56a009db3a91c0c47bdd", kill_on_drop: false }`
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking qcell v0.5.4
[INFO] [stderr]     Checking stakker v0.2.10
[INFO] [stderr]     Checking stakker_async_await v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/futures_core.rs:79:1
[INFO] [stdout]    |
[INFO] [stdout] 79 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/rust_std.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/futures_core.rs:79:1
[INFO] [stdout]    |
[INFO] [stdout] 79 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]   --> src/rust_std.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "42f137e86575af9fe92d35e5deba01b297ec1fc54d3f56a009db3a91c0c47bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42f137e86575af9fe92d35e5deba01b297ec1fc54d3f56a009db3a91c0c47bdd", kill_on_drop: false }`
[INFO] [stdout] 42f137e86575af9fe92d35e5deba01b297ec1fc54d3f56a009db3a91c0c47bdd