[INFO] cloning repository https://github.com/wachikun/yaskkserv2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wachikun/yaskkserv2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwachikun%2Fyaskkserv2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwachikun%2Fyaskkserv2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d93cfd95825bc983004e5e80b1a35fe6318bf62
[INFO] checking wachikun/yaskkserv2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwachikun%2Fyaskkserv2" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wachikun/yaskkserv2 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wachikun/yaskkserv2
[INFO] finished tweaking git repo https://github.com/wachikun/yaskkserv2
[INFO] tweaked toml for git repo https://github.com/wachikun/yaskkserv2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wachikun/yaskkserv2 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "ce438a60cb83cacd87aef559c69611bfc4bb4f08cc457766e4b488d122b8a745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce438a60cb83cacd87aef559c69611bfc4bb4f08cc457766e4b488d122b8a745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce438a60cb83cacd87aef559c69611bfc4bb4f08cc457766e4b488d122b8a745", kill_on_drop: false }`
[INFO] [stdout] ce438a60cb83cacd87aef559c69611bfc4bb4f08cc457766e4b488d122b8a745
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd63c06cfea809b55fe38904bb4c02b397effca19375dfa5549dc8e5ee8019fe
[INFO] running `Command { std: "docker" "start" "-a" "fd63c06cfea809b55fe38904bb4c02b397effca19375dfa5549dc8e5ee8019fe", kill_on_drop: false }`
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[INFO] [stderr]     Checking syslog v4.0.1
[INFO] [stderr]    Compiling openssl-macros v0.1.1
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[INFO] [stderr]    Compiling serde_derive v1.0.196
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[INFO] [stderr]     Checking yaskkserv2 v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/skk/yaskkserv2/request.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/skk.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/skk/yaskkserv2/request.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]    --> src/skk/yaskkserv2/request.rs:396:9
[INFO] [stdout]     |
[INFO] [stdout] 396 |     use std::convert::TryInto;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/skk.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `U8Slice` is never used
[INFO] [stdout]   --> src/skk.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 | trait U8Slice {
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_disconnect_flush` is never used
[INFO] [stdout]    --> src/skk/yaskkserv2.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub(in crate::skk) trait TcpStreamSkk: Write {
[INFO] [stdout]     |                          ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn write_disconnect_flush(&mut self) -> Result<(), std::io::Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `U8Slice` is never used
[INFO] [stdout]   --> src/skk.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 | trait U8Slice {
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `send_split`, `send_half_each`, and `send_split_random` are never used
[INFO] [stdout]    --> src/skk/yaskkserv2/server.rs:180:12
[INFO] [stdout]     |
[INFO] [stdout] 178 |     impl ServerDebugImpl {
[INFO] [stdout]     |     -------------------- associated functions in this implementation
[INFO] [stdout] 179 |         #[allow(clippy::branches_sharing_code)]
[INFO] [stdout] 180 |         fn send_split(mut stream: &TcpStream, buffer: &[u8], split: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |         fn send_half_each(stream: &TcpStream, buffer: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |         fn send_split_random(stream: &TcpStream, buffer: &[u8]) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `send_bytes_debug_bad_condition` is never used
[INFO] [stdout]    --> src/skk/yaskkserv2/server.rs:231:12
[INFO] [stdout]     |
[INFO] [stdout] 230 |     pub(in crate::skk) trait ServerDebug {
[INFO] [stdout]     |                              ----------- associated function in this trait
[INFO] [stdout] 231 |         fn send_bytes_debug_bad_condition(stream: &mut TcpStream, buffer: &[u8]);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.74s
[INFO] running `Command { std: "docker" "inspect" "fd63c06cfea809b55fe38904bb4c02b397effca19375dfa5549dc8e5ee8019fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd63c06cfea809b55fe38904bb4c02b397effca19375dfa5549dc8e5ee8019fe", kill_on_drop: false }`
[INFO] [stdout] fd63c06cfea809b55fe38904bb4c02b397effca19375dfa5549dc8e5ee8019fe