[INFO] fetching crate webrtc-util 0.8.0...
[INFO] checking webrtc-util-0.8.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate webrtc-util 0.8.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate webrtc-util 0.8.0 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 webrtc-util 0.8.0
[INFO] finished tweaking crates.io crate webrtc-util 0.8.0
[INFO] tweaked toml for crates.io crate webrtc-util 0.8.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate webrtc-util 0.8.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.106
[INFO] [stderr]   Downloaded chrono v0.4.30
[INFO] [stderr]   Downloaded rustix v0.38.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f056161696b006609a091c56e83b963a4aaecc4abdd6548312dad9ed967ebb5b
[INFO] running `Command { std: "docker" "start" "-a" "f056161696b006609a091c56e83b963a4aaecc4abdd6548312dad9ed967ebb5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f056161696b006609a091c56e83b963a4aaecc4abdd6548312dad9ed967ebb5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f056161696b006609a091c56e83b963a4aaecc4abdd6548312dad9ed967ebb5b", kill_on_drop: false }`
[INFO] [stdout] f056161696b006609a091c56e83b963a4aaecc4abdd6548312dad9ed967ebb5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 279d99b86564ae393e21e3cdf32edcddea98bc80f79ed4eb9582c324f2c2c2fd
[INFO] running `Command { std: "docker" "start" "-a" "279d99b86564ae393e21e3cdf32edcddea98bc80f79ed4eb9582c324f2c2c2fd", 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 futures-core v0.3.28
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling rustix v0.38.12
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking aho-corasick v1.0.5
[INFO] [stderr]     Checking linux-raw-sys v0.4.7
[INFO] [stderr]    Compiling serde_json v1.0.106
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.73
[INFO] [stderr]     Checking anstyle v1.0.2
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]     Checking clap_builder v4.4.2
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking ipnet v2.8.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking chrono v0.4.30
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]    Compiling webrtc-util v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking clap v4.4.2
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/conn/conn_bridge.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 | use super::*;
[INFO] [stdout]    |     -------- the item `Arc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/conn/conn_disconnected_packet.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tokio-test v0.4.3
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]  --> src/buffer/buffer_test.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::time::{sleep, Duration};
[INFO] [stdout]   |                          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `Duration` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]  --> src/buffer/buffer_test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `Error` is already imported here
[INFO] [stdout] 6 | use crate::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/conn/conn_bridge.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 | use super::*;
[INFO] [stdout]    |     -------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/conn/conn_disconnected_packet.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 | use super::*;
[INFO] [stdout]   |     -------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/conn/conn_bridge_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 | use super::*;
[INFO] [stdout]   |     -------- the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]   --> src/conn/conn_udp_listener_test.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 9  | use super::*;
[INFO] [stdout]    |     -------- the item `Result` is already imported here
[INFO] [stdout] 10 | use crate::error::{Error, Result};
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/vnet/chunk/chunk_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Result` is already imported here
[INFO] [stdout] 2 | use crate::error::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.31s
[INFO] running `Command { std: "docker" "inspect" "279d99b86564ae393e21e3cdf32edcddea98bc80f79ed4eb9582c324f2c2c2fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279d99b86564ae393e21e3cdf32edcddea98bc80f79ed4eb9582c324f2c2c2fd", kill_on_drop: false }`
[INFO] [stdout] 279d99b86564ae393e21e3cdf32edcddea98bc80f79ed4eb9582c324f2c2c2fd