[INFO] fetching crate yamaha_avr 0.2.0...
[INFO] checking yamaha_avr-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate yamaha_avr 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate yamaha_avr 0.2.0 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 yamaha_avr 0.2.0
[INFO] finished tweaking crates.io crate yamaha_avr 0.2.0
[INFO] tweaked toml for crates.io crate yamaha_avr 0.2.0 written to /workspace/builds/worker-2-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 103 packages
[INFO] [stderr]       Adding aho-corasick v0.6.10 (latest: v1.1.3)
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[INFO] [stderr]       Adding hyper v0.11.27 (latest: v1.2.0)
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[INFO] [stderr]       Adding tokio v0.1.22 (latest: v1.37.0)
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[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] [stderr]       Adding xml-rs v0.6.1 (latest: v0.8.20)
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7fe849d6232d8bda335dd7bb0922318cfd119c06fe729bd824748f31d3fde879
[INFO] running `Command { std: "docker" "start" "-a" "7fe849d6232d8bda335dd7bb0922318cfd119c06fe729bd824748f31d3fde879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fe849d6232d8bda335dd7bb0922318cfd119c06fe729bd824748f31d3fde879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fe849d6232d8bda335dd7bb0922318cfd119c06fe729bd824748f31d3fde879", kill_on_drop: false }`
[INFO] [stdout] 7fe849d6232d8bda335dd7bb0922318cfd119c06fe729bd824748f31d3fde879
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b7ac7ba0320ad5b6fc4e18c8734ffde328485f765ce103e0f5e6970d8458ee68
[INFO] running `Command { std: "docker" "start" "-a" "b7ac7ba0320ad5b6fc4e18c8734ffde328485f765ce103e0f5e6970d8458ee68", kill_on_drop: false }`
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling regex v0.2.11
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[INFO] [stderr]     Checking ucd-util v0.1.10
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[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking want v0.0.4
[INFO] [stderr]     Checking relay v0.1.1
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[INFO] [stderr]     Checking utf8-ranges v1.0.5
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[INFO] [stderr]     Checking xml-rs v0.6.1
[INFO] [stderr]     Checking mio-uds v0.6.8
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[INFO] [stderr]     Checking tokio-fs v0.1.7
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[INFO] [stderr]     Checking tokio-udp v0.1.6
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[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking yamaha_avr v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]  --> src/yamaha/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hyper;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate hyper;
[INFO] [stdout]   | ------------------- the item `hyper` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/yamaha/http.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]  --> src/yamaha/http.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hyper;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate hyper;
[INFO] [stdout]   | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]  --> src/yamaha/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hyper;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate hyper;
[INFO] [stdout]   | ------------------- the item `hyper` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/yamaha/http.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]  --> src/yamaha/http.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hyper;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate hyper;
[INFO] [stdout]   | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.97s
[INFO] running `Command { std: "docker" "inspect" "b7ac7ba0320ad5b6fc4e18c8734ffde328485f765ce103e0f5e6970d8458ee68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7ac7ba0320ad5b6fc4e18c8734ffde328485f765ce103e0f5e6970d8458ee68", kill_on_drop: false }`
[INFO] [stdout] b7ac7ba0320ad5b6fc4e18c8734ffde328485f765ce103e0f5e6970d8458ee68