[INFO] fetching crate aws-iot-device-sdk-rust 0.3.0...
[INFO] checking aws-iot-device-sdk-rust-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate aws-iot-device-sdk-rust 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate aws-iot-device-sdk-rust 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] started tweaking crates.io crate aws-iot-device-sdk-rust 0.3.0
[INFO] finished tweaking crates.io crate aws-iot-device-sdk-rust 0.3.0
[INFO] tweaked toml for crates.io crate aws-iot-device-sdk-rust 0.3.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate aws-iot-device-sdk-rust 0.3.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memchr v2.6.3
[INFO] [stderr]   Downloaded serde_json v1.0.105
[INFO] [stderr]   Downloaded webpki v0.22.1
[INFO] [stderr]   Downloaded syn v2.0.31
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.8
[INFO] [stderr]   Downloaded bus v2.4.1
[INFO] [stderr]   Downloaded getrandom v0.2.10
[INFO] [stderr]   Downloaded nanorand v0.7.0
[INFO] [stderr]   Downloaded pin-project-internal v1.1.3
[INFO] [stderr]   Downloaded pin-project v1.1.3
[INFO] [stderr]   Downloaded flume v0.10.14
[INFO] [stderr]   Downloaded pollster v0.2.5
[INFO] [stderr]   Downloaded base64 v0.21.3
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.3
[INFO] [stderr]   Downloaded thiserror-impl v1.0.48
[INFO] [stderr]   Downloaded thiserror v1.0.48
[INFO] [stderr]   Downloaded bumpalo v3.13.0
[INFO] [stderr]   Downloaded rumqttc v0.15.0
[INFO] [stderr]   Downloaded tokio-rustls v0.23.3
[INFO] [stderr]   Downloaded serde_derive v1.0.188
[INFO] [stderr]   Downloaded serde v1.0.188
[INFO] [stderr]   Downloaded mqtt4bytes v0.1.7
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fe83ee9e3fc40164e2a1cc6ceaa1b78bae9ecd7e810d8b71158e94829bffbbc
[INFO] running `Command { std: "docker" "start" "-a" "2fe83ee9e3fc40164e2a1cc6ceaa1b78bae9ecd7e810d8b71158e94829bffbbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fe83ee9e3fc40164e2a1cc6ceaa1b78bae9ecd7e810d8b71158e94829bffbbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fe83ee9e3fc40164e2a1cc6ceaa1b78bae9ecd7e810d8b71158e94829bffbbc", kill_on_drop: false }`
[INFO] [stdout] 2fe83ee9e3fc40164e2a1cc6ceaa1b78bae9ecd7e810d8b71158e94829bffbbc
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f076a83c0bc951f9eb78ca22b089397aa4fd1f23a8aeab5bb2dc555d64d98c28
[INFO] running `Command { std: "docker" "start" "-a" "f076a83c0bc951f9eb78ca22b089397aa4fd1f23a8aeab5bb2dc555d64d98c28", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking base64 v0.21.3
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pollster v0.2.5
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking mqtt4bytes v0.1.7
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]     Checking rustls-native-certs v0.6.3
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.1
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking tokio-rustls v0.23.3
[INFO] [stderr]     Checking rumqttc v0.15.0
[INFO] [stderr]     Checking aws-iot-device-sdk-rust v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/async_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     self, AsyncClient, ClientError, ConnectionError, Event, EventLoop, Incoming, QoS, Request,
[INFO] [stdout]   |     ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/settings.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rumqttc::{self, Key, LastWill, MqttOptions, TlsConfiguration, Transport};
[INFO] [stdout]   |               ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/async_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     self, AsyncClient, ClientError, ConnectionError, Event, EventLoop, Incoming, QoS, Request,
[INFO] [stdout]   |     ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/settings.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rumqttc::{self, Key, LastWill, MqttOptions, TlsConfiguration, Transport};
[INFO] [stdout]   |               ^^^^ the item `rumqttc` is already defined by prelude
[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 17.72s
[INFO] running `Command { std: "docker" "inspect" "f076a83c0bc951f9eb78ca22b089397aa4fd1f23a8aeab5bb2dc555d64d98c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f076a83c0bc951f9eb78ca22b089397aa4fd1f23a8aeab5bb2dc555d64d98c28", kill_on_drop: false }`
[INFO] [stdout] f076a83c0bc951f9eb78ca22b089397aa4fd1f23a8aeab5bb2dc555d64d98c28
[INFO] checking aws-iot-device-sdk-rust-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate aws-iot-device-sdk-rust 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate aws-iot-device-sdk-rust 0.3.0 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 aws-iot-device-sdk-rust 0.3.0
[INFO] finished tweaking crates.io crate aws-iot-device-sdk-rust 0.3.0
[INFO] tweaked toml for crates.io crate aws-iot-device-sdk-rust 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate aws-iot-device-sdk-rust 0.3.0 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ebf0f8b9c1b4c03e348f8249fce16b68f3d9eeb624b8d8378d2926cc0f58af2
[INFO] running `Command { std: "docker" "start" "-a" "4ebf0f8b9c1b4c03e348f8249fce16b68f3d9eeb624b8d8378d2926cc0f58af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ebf0f8b9c1b4c03e348f8249fce16b68f3d9eeb624b8d8378d2926cc0f58af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ebf0f8b9c1b4c03e348f8249fce16b68f3d9eeb624b8d8378d2926cc0f58af2", kill_on_drop: false }`
[INFO] [stdout] 4ebf0f8b9c1b4c03e348f8249fce16b68f3d9eeb624b8d8378d2926cc0f58af2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e8a3d42d54eb41f7d0cd40d89226efbfe60af19e7e3d54bd7c085f87c9e0030
[INFO] running `Command { std: "docker" "start" "-a" "5e8a3d42d54eb41f7d0cd40d89226efbfe60af19e7e3d54bd7c085f87c9e0030", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking base64 v0.21.3
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pollster v0.2.5
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking rustls-native-certs v0.6.3
[INFO] [stderr]     Checking mqtt4bytes v0.1.7
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.1
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking tokio-rustls v0.23.3
[INFO] [stderr]     Checking rumqttc v0.15.0
[INFO] [stderr]     Checking aws-iot-device-sdk-rust v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/async_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     self, AsyncClient, ClientError, ConnectionError, Event, EventLoop, Incoming, QoS, Request,
[INFO] [stdout]   |     ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/settings.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rumqttc::{self, Key, LastWill, MqttOptions, TlsConfiguration, Transport};
[INFO] [stdout]   |               ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/async_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     self, AsyncClient, ClientError, ConnectionError, Event, EventLoop, Incoming, QoS, Request,
[INFO] [stdout]   |     ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> src/settings.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rumqttc::{self, Key, LastWill, MqttOptions, TlsConfiguration, Transport};
[INFO] [stdout]   |               ^^^^ the item `rumqttc` is already defined by prelude
[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 17.62s
[INFO] running `Command { std: "docker" "inspect" "5e8a3d42d54eb41f7d0cd40d89226efbfe60af19e7e3d54bd7c085f87c9e0030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e8a3d42d54eb41f7d0cd40d89226efbfe60af19e7e3d54bd7c085f87c9e0030", kill_on_drop: false }`
[INFO] [stdout] 5e8a3d42d54eb41f7d0cd40d89226efbfe60af19e7e3d54bd7c085f87c9e0030