[INFO] cloning repository https://github.com/mzhou/udp_in_tcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mzhou/udp_in_tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzhou%2Fudp_in_tcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzhou%2Fudp_in_tcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1586601e5cb97271d566f7ad215dd54cb21c79c2
[INFO] checking mzhou/udp_in_tcp against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzhou%2Fudp_in_tcp" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mzhou/udp_in_tcp
[INFO] finished tweaking git repo https://github.com/mzhou/udp_in_tcp
[INFO] tweaked toml for git repo https://github.com/mzhou/udp_in_tcp written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mzhou/udp_in_tcp on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mzhou/udp_in_tcp 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maligned v0.2.1
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a72517457f832a8b588cc7a8b25c49e9866160a98ff0de9bf32549eb83ef1286
[INFO] running `Command { std: "docker" "start" "-a" "a72517457f832a8b588cc7a8b25c49e9866160a98ff0de9bf32549eb83ef1286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a72517457f832a8b588cc7a8b25c49e9866160a98ff0de9bf32549eb83ef1286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a72517457f832a8b588cc7a8b25c49e9866160a98ff0de9bf32549eb83ef1286", kill_on_drop: false }`
[INFO] [stdout] a72517457f832a8b588cc7a8b25c49e9866160a98ff0de9bf32549eb83ef1286
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5903a7869b93e28abb702bc25e6b7007563c7099b1151e61c18871c1739066e0
[INFO] running `Command { std: "docker" "start" "-a" "5903a7869b93e28abb702bc25e6b7007563c7099b1151e61c18871c1739066e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking bytes v0.5.5
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking maligned v0.2.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking udp_in_tcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `remaining_mut` is never used
[INFO] [stdout]   --> src/flex_buffer.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl FlexBuffer<'_> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 31 |     // bytes::buf::BufMut-ish
[INFO] [stdout] 32 |     pub fn remaining_mut(self: &Self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remaining_mut` is never used
[INFO] [stdout]   --> src/flex_buffer.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl FlexBuffer<'_> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 31 |     // bytes::buf::BufMut-ish
[INFO] [stdout] 32 |     pub fn remaining_mut(self: &Self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/flex_buffer.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(backing: &mut [u8]) -> FlexBuffer {
[INFO] [stdout]   |                         ^^^^^^^^^     ---------- the same lifetime is hidden here
[INFO] [stdout]   |                         |
[INFO] [stdout]   |                         the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(backing: &mut [u8]) -> FlexBuffer<'_> {
[INFO] [stdout]   |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/flex_buffer.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(backing: &mut [u8]) -> FlexBuffer {
[INFO] [stdout]   |                         ^^^^^^^^^     ---------- the same lifetime is hidden here
[INFO] [stdout]   |                         |
[INFO] [stdout]   |                         the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(backing: &mut [u8]) -> FlexBuffer<'_> {
[INFO] [stdout]   |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.29s
[INFO] running `Command { std: "docker" "inspect" "5903a7869b93e28abb702bc25e6b7007563c7099b1151e61c18871c1739066e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5903a7869b93e28abb702bc25e6b7007563c7099b1151e61c18871c1739066e0", kill_on_drop: false }`
[INFO] [stdout] 5903a7869b93e28abb702bc25e6b7007563c7099b1151e61c18871c1739066e0