[INFO] cloning repository https://github.com/Qingluan/tokio-protocols
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Qingluan/tokio-protocols" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQingluan%2Ftokio-protocols", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQingluan%2Ftokio-protocols'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b0882e09fbb80063b2b8099eb6cc43acf78cec5
[INFO] checking Qingluan/tokio-protocols against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQingluan%2Ftokio-protocols" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Qingluan/tokio-protocols 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 git repo https://github.com/Qingluan/tokio-protocols
[INFO] finished tweaking git repo https://github.com/Qingluan/tokio-protocols
[INFO] tweaked toml for git repo https://github.com/Qingluan/tokio-protocols written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Qingluan/tokio-protocols 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 hermit-abi v0.1.5
[INFO] [stderr]   Downloaded bytes v0.5.3
[INFO] [stderr]   Downloaded tokio-macros v0.2.1
[INFO] [stderr]   Downloaded tokio v0.2.6
[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] df204f5d9569a1a88810a457e18e64092a1cfa465715f305c3e5bf08b5ae3206
[INFO] running `Command { std: "docker" "start" "-a" "df204f5d9569a1a88810a457e18e64092a1cfa465715f305c3e5bf08b5ae3206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df204f5d9569a1a88810a457e18e64092a1cfa465715f305c3e5bf08b5ae3206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df204f5d9569a1a88810a457e18e64092a1cfa465715f305c3e5bf08b5ae3206", kill_on_drop: false }`
[INFO] [stdout] df204f5d9569a1a88810a457e18e64092a1cfa465715f305c3e5bf08b5ae3206
[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] 5f5e7b61f4fbd195e369af64dda165e6495247ea9ae72b4f361ec8d30f3f027f
[INFO] running `Command { std: "docker" "start" "-a" "5f5e7b61f4fbd195e369af64dda165e6495247ea9ae72b4f361ec8d30f3f027f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.1
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking rust-net-protocols v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/socks5/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     convert::From,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mio` is imported redundantly
[INFO] [stdout]  --> src/kcp/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use mio;
[INFO] [stdout]   |     ^^^ the item `mio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ctime` is imported redundantly
[INFO] [stdout]   --> src/kcp/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use crate::ctime;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | extern crate time as ctime;
[INFO] [stdout]    | --------------------------- the item `ctime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Unpin` is imported redundantly
[INFO] [stdout]  --> src/connector/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::marker::Unpin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Unpin` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/socks5/mod.rs:245:72
[INFO] [stdout]     |
[INFO] [stdout] 245 |         Error::new(Reply::GeneralFailure, <io::Error as error::Error>::description(&err))
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/socks5/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     convert::From,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mio` is imported redundantly
[INFO] [stdout]  --> src/kcp/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use mio;
[INFO] [stdout]   |     ^^^ the item `mio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ctime` is imported redundantly
[INFO] [stdout]   --> src/kcp/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use crate::ctime;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | extern crate time as ctime;
[INFO] [stdout]    | --------------------------- the item `ctime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Unpin` is imported redundantly
[INFO] [stdout]  --> src/connector/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::marker::Unpin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Unpin` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/socks5/mod.rs:245:72
[INFO] [stdout]     |
[INFO] [stdout] 245 |         Error::new(Reply::GeneralFailure, <io::Error as error::Error>::description(&err))
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buf` and `addr` are never read
[INFO] [stdout]   --> src/kcp/mod.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct Message{
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 54 |     buf: Vec<u8>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 55 |     addr: SocketAddr,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanReset` is never used
[INFO] [stdout]    --> src/kcp/mod.rs:578:7
[INFO] [stdout]     |
[INFO] [stdout] 578 | trait CanReset{
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `buf` and `addr` are never read
[INFO] [stdout]   --> src/kcp/mod.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct Message{
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 54 |     buf: Vec<u8>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 55 |     addr: SocketAddr,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CanReset` is never used
[INFO] [stdout]    --> src/kcp/mod.rs:578:7
[INFO] [stdout]     |
[INFO] [stdout] 578 | trait CanReset{
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.65s
[INFO] running `Command { std: "docker" "inspect" "5f5e7b61f4fbd195e369af64dda165e6495247ea9ae72b4f361ec8d30f3f027f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f5e7b61f4fbd195e369af64dda165e6495247ea9ae72b4f361ec8d30f3f027f", kill_on_drop: false }`
[INFO] [stdout] 5f5e7b61f4fbd195e369af64dda165e6495247ea9ae72b4f361ec8d30f3f027f