[INFO] fetching crate mmdbus 1.18.6...
[INFO] checking mmdbus-1.18.6 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mmdbus 1.18.6 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mmdbus 1.18.6 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 mmdbus 1.18.6
[INFO] finished tweaking crates.io crate mmdbus 1.18.6
[INFO] tweaked toml for crates.io crate mmdbus 1.18.6 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 8 packages
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dbus v0.9.7
[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] 3cd0decd2c425bb16777ccfaf9dae6f723a837dbbadeb55ea9b59fdae946a7b7
[INFO] running `Command { std: "docker" "start" "-a" "3cd0decd2c425bb16777ccfaf9dae6f723a837dbbadeb55ea9b59fdae946a7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cd0decd2c425bb16777ccfaf9dae6f723a837dbbadeb55ea9b59fdae946a7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd0decd2c425bb16777ccfaf9dae6f723a837dbbadeb55ea9b59fdae946a7b7", kill_on_drop: false }`
[INFO] [stdout] 3cd0decd2c425bb16777ccfaf9dae6f723a837dbbadeb55ea9b59fdae946a7b7
[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] 8cdaa54c85651e3bc879acf1d3d68dc310c9d359b997589359ef1044ca58a312
[INFO] running `Command { std: "docker" "start" "-a" "8cdaa54c85651e3bc879acf1d3d68dc310c9d359b997589359ef1044ca58a312", kill_on_drop: false }`
[INFO] [stderr]    Compiling libdbus-sys v0.2.5
[INFO] [stderr]     Checking dbus v0.9.7
[INFO] [stderr]     Checking mmdbus v1.18.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/bearer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` 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 `dbus` is imported redundantly
[INFO] [stdout]  --> src/call.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_firmware.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_location.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_messaging.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modem3gpp_profilemanager.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modem3gpp_ussd.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modem3gpp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modemcdma.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_oma.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_signal.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_time.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_voice.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/sim.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/sms.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modemmanager.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/bearer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` 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 `dbus` is imported redundantly
[INFO] [stdout]  --> src/call.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_firmware.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_location.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_messaging.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modem3gpp_profilemanager.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modem3gpp_ussd.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modem3gpp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_modemcdma.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_oma.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_signal.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_time.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem_voice.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modem.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/sim.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/sms.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]  --> src/modemmanager.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use dbus as dbus;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "8cdaa54c85651e3bc879acf1d3d68dc310c9d359b997589359ef1044ca58a312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cdaa54c85651e3bc879acf1d3d68dc310c9d359b997589359ef1044ca58a312", kill_on_drop: false }`
[INFO] [stdout] 8cdaa54c85651e3bc879acf1d3d68dc310c9d359b997589359ef1044ca58a312