[INFO] fetching crate rusturn 0.0.4...
[INFO] checking rusturn-0.0.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate rusturn 0.0.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate rusturn 0.0.4 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 rusturn 0.0.4
[INFO] finished tweaking crates.io crate rusturn 0.0.4
[INFO] tweaked toml for crates.io crate rusturn 0.0.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate rusturn 0.0.4 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 hmac-sha1 v0.1.3
[INFO] [stderr]   Downloaded bytecodec v0.4.15
[INFO] [stderr]   Downloaded fibers_transport v0.1.3
[INFO] [stderr]   Downloaded rustun v0.4.0
[INFO] [stderr]   Downloaded trackable_derive v1.0.0
[INFO] [stderr]   Downloaded factory v0.1.2
[INFO] [stderr]   Downloaded fibers_global v0.1.2
[INFO] [stderr]   Downloaded fibers_timeout_queue v0.1.0
[INFO] [stderr]   Downloaded splay_tree v0.2.10
[INFO] [stderr]   Downloaded nbchan v0.1.3
[INFO] [stderr]   Downloaded fibers v0.1.13
[INFO] [stderr]   Downloaded stun_codec v0.2.0
[INFO] [stderr]   Downloaded trackable v1.2.0
[INFO] [stderr]   Downloaded trackable v0.2.24
[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] d88b84769224ce147b73dcb4b9ed4af40d6e486e83b143d4a411ec58e572711d
[INFO] running `Command { std: "docker" "start" "-a" "d88b84769224ce147b73dcb4b9ed4af40d6e486e83b143d4a411ec58e572711d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d88b84769224ce147b73dcb4b9ed4af40d6e486e83b143d4a411ec58e572711d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88b84769224ce147b73dcb4b9ed4af40d6e486e83b143d4a411ec58e572711d", kill_on_drop: false }`
[INFO] [stdout] d88b84769224ce147b73dcb4b9ed4af40d6e486e83b143d4a411ec58e572711d
[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] b338a8dcce338cb7fb9ac5d1b822f9643d0dc0ed50da004d9a135569e405efc5
[INFO] running `Command { std: "docker" "start" "-a" "b338a8dcce338cb7fb9ac5d1b822f9643d0dc0ed50da004d9a135569e405efc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.120
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking splay_tree v0.2.10
[INFO] [stderr]     Checking nbchan v0.1.3
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking crc-catalog v1.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking crc v2.1.0
[INFO] [stderr]     Checking hmac-sha1 v0.1.3
[INFO] [stderr]     Checking factory v0.1.2
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking fibers v0.1.13
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking fibers_timeout_queue v0.1.0
[INFO] [stderr]     Checking fibers_global v0.1.2
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking trackable v1.2.0
[INFO] [stderr]     Checking trackable v0.2.24
[INFO] [stderr]     Checking bytecodec v0.4.15
[INFO] [stderr]     Checking fibers_transport v0.1.3
[INFO] [stderr]     Checking stun_codec v0.2.0
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking rustun v0.4.0
[INFO] [stderr]     Checking rusturn v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/client/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std;
[INFO] [stdout]    |     ^^^ the item `std` 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 `futures` is imported redundantly
[INFO] [stdout]  --> src/client/stun_transaction.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::{self, Future, Poll};
[INFO] [stdout]   |               ^^^^ the item `futures` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustun` is imported redundantly
[INFO] [stdout]  --> src/transport/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rustun;
[INFO] [stdout]   |     ^^^^^^ the item `rustun` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/client/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std;
[INFO] [stdout]    |     ^^^ the item `std` 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 `futures` is imported redundantly
[INFO] [stdout]  --> src/client/stun_transaction.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::{self, Future, Poll};
[INFO] [stdout]   |               ^^^^ the item `futures` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustun` is imported redundantly
[INFO] [stdout]  --> src/transport/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rustun;
[INFO] [stdout]   |     ^^^^^^ the item `rustun` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustun` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use rustun;
[INFO] [stdout]     |         ^^^^^^ the item `rustun` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.36s
[INFO] running `Command { std: "docker" "inspect" "b338a8dcce338cb7fb9ac5d1b822f9643d0dc0ed50da004d9a135569e405efc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b338a8dcce338cb7fb9ac5d1b822f9643d0dc0ed50da004d9a135569e405efc5", kill_on_drop: false }`
[INFO] [stdout] b338a8dcce338cb7fb9ac5d1b822f9643d0dc0ed50da004d9a135569e405efc5