[INFO] fetching crate tokio-libtls 1.2.0...
[INFO] checking tokio-libtls-1.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tokio-libtls 1.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate tokio-libtls 1.2.0 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 tokio-libtls 1.2.0
[INFO] finished tweaking crates.io crate tokio-libtls 1.2.0
[INFO] tweaked toml for crates.io crate tokio-libtls 1.2.0 written to /workspace/builds/worker-6-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]      Locking 82 packages
[INFO] [stderr]       Adding bindgen v0.53.3 (latest: v0.69.4)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding cexpr v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding clang-sys v0.29.3 (latest: v1.7.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding env_logger v0.7.1 (latest: v0.11.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding libloading v0.5.2 (latest: v0.8.3)
[INFO] [stderr]       Adding mio v0.6.23 (latest: v0.8.11)
[INFO] [stderr]       Adding miow v0.2.2 (latest: v0.6.0)
[INFO] [stderr]       Adding miow v0.3.7 (latest: v0.6.0)
[INFO] [stderr]       Adding nom v5.1.3 (latest: v7.1.3)
[INFO] [stderr]       Adding peeking_take_while v0.1.2 (latest: v1.0.0)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding shlex v0.1.1 (latest: v1.3.0)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding tokio v0.2.25 (latest: v1.37.0)
[INFO] [stderr]       Adding tokio-macros v0.2.6 (latest: v2.2.0)
[INFO] [stderr]       Adding which v3.1.1 (latest: v6.0.1)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[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 libtls v1.2.0
[INFO] [stderr]   Downloaded cexpr v0.4.0
[INFO] [stderr]   Downloaded which v3.1.1
[INFO] [stderr]   Downloaded clang-sys v0.29.3
[INFO] [stderr]   Downloaded bindgen v0.53.3
[INFO] [stderr]   Downloaded libtls-sys v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8f2fb7096d7b51f8fe4be5dfce7e731c1ebc9dd03cfdfd6fdfc353c664ee423c
[INFO] running `Command { std: "docker" "start" "-a" "8f2fb7096d7b51f8fe4be5dfce7e731c1ebc9dd03cfdfd6fdfc353c664ee423c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f2fb7096d7b51f8fe4be5dfce7e731c1ebc9dd03cfdfd6fdfc353c664ee423c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f2fb7096d7b51f8fe4be5dfce7e731c1ebc9dd03cfdfd6fdfc353c664ee423c", kill_on_drop: false }`
[INFO] [stdout] 8f2fb7096d7b51f8fe4be5dfce7e731c1ebc9dd03cfdfd6fdfc353c664ee423c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 37bed4944d10a261847f0ea52fa8adc214db26ec14c69071e3c6897e27ca71e0
[INFO] running `Command { std: "docker" "start" "-a" "37bed4944d10a261847f0ea52fa8adc214db26ec14c69071e3c6897e27ca71e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]    Compiling libtls-sys v1.2.0
[INFO] [stderr]    Compiling libtls v1.2.0
[INFO] [stderr]     Checking tokio-libtls v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TcpListener` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:84:11
[INFO] [stdout]    |
[INFO] [stdout] 72 | use prelude::*;
[INFO] [stdout]    |     ---------- the item `TcpListener` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 84 |     net::{TcpListener, TcpStream},
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TcpStream` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 72 | use prelude::*;
[INFO] [stdout]    |     ---------- the item `TcpStream` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 84 |     net::{TcpListener, TcpStream},
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TcpListener` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:84:11
[INFO] [stdout]    |
[INFO] [stdout] 72 | use prelude::*;
[INFO] [stdout]    |     ---------- the item `TcpListener` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 84 |     net::{TcpListener, TcpStream},
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TcpStream` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 72 | use prelude::*;
[INFO] [stdout]    |     ---------- the item `TcpStream` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 84 |     net::{TcpListener, TcpStream},
[INFO] [stdout]    |                        ^^^^^^^^^
[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 3m 24s
[INFO] running `Command { std: "docker" "inspect" "37bed4944d10a261847f0ea52fa8adc214db26ec14c69071e3c6897e27ca71e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37bed4944d10a261847f0ea52fa8adc214db26ec14c69071e3c6897e27ca71e0", kill_on_drop: false }`
[INFO] [stdout] 37bed4944d10a261847f0ea52fa8adc214db26ec14c69071e3c6897e27ca71e0