[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#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzhou%2Fudp_in_tcp" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-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-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mzhou/udp_in_tcp on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.0
[INFO] [stderr]   Downloaded tokio-macros v0.2.5
[INFO] [stderr]   Downloaded net2 v0.2.34
[INFO] [stderr]   Downloaded pin-project-lite v0.1.7
[INFO] [stderr]   Downloaded arc-swap v0.4.7
[INFO] [stderr]   Downloaded maligned v0.2.1
[INFO] [stderr]   Downloaded futures-core v0.3.5
[INFO] [stderr]   Downloaded generator v0.6.21
[INFO] [stderr]   Downloaded bytes v0.5.5
[INFO] [stderr]   Downloaded cc v1.0.58
[INFO] [stderr]   Downloaded loom v0.3.4
[INFO] [stderr]   Downloaded socket2 v0.3.12
[INFO] [stderr]   Downloaded mio v0.6.22
[INFO] [stderr]   Downloaded miow v0.3.5
[INFO] [stderr]   Downloaded syn v1.0.33
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded clap v2.33.1
[INFO] [stderr]   Downloaded mio-named-pipes v0.1.7
[INFO] [stderr]   Downloaded tokio v0.2.21
[INFO] [stderr]   Downloaded libc v0.2.72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e852ae7c4280f2ba498bb784ec876a36e3aa36383c79287a1c772188c9b312b3
[INFO] running `Command { std: "docker" "start" "-a" "e852ae7c4280f2ba498bb784ec876a36e3aa36383c79287a1c772188c9b312b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e852ae7c4280f2ba498bb784ec876a36e3aa36383c79287a1c772188c9b312b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e852ae7c4280f2ba498bb784ec876a36e3aa36383c79287a1c772188c9b312b3", kill_on_drop: false }`
[INFO] [stdout] e852ae7c4280f2ba498bb784ec876a36e3aa36383c79287a1c772188c9b312b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e021bae48b2bc6599f499a4a5a401fb480366904aa4b04406a1db009ca3c60e9
[INFO] running `Command { std: "docker" "start" "-a" "e021bae48b2bc6599f499a4a5a401fb480366904aa4b04406a1db009ca3c60e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking bytes v0.5.5
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking maligned v0.2.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.7
[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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.15s
[INFO] running `Command { std: "docker" "inspect" "e021bae48b2bc6599f499a4a5a401fb480366904aa4b04406a1db009ca3c60e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e021bae48b2bc6599f499a4a5a401fb480366904aa4b04406a1db009ca3c60e9", kill_on_drop: false }`
[INFO] [stdout] e021bae48b2bc6599f499a4a5a401fb480366904aa4b04406a1db009ca3c60e9