[INFO] updating cached repository gluaxspeed/r2wc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gluaxspeed/r2wc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gluaxspeed/r2wc" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/gluaxspeed/r2wc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/gluaxspeed/r2wc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gluaxspeed/r2wc" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/gluaxspeed/r2wc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/gluaxspeed/r2wc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cdc59383aab43b4c6439f6b4eae38cd2208c082f
[INFO] sha for GitHub repo gluaxspeed/r2wc: cdc59383aab43b4c6439f6b4eae38cd2208c082f
[INFO] validating manifest of gluaxspeed/r2wc on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gluaxspeed/r2wc on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gluaxspeed/r2wc
[INFO] finished frobbing gluaxspeed/r2wc
[INFO] frobbed toml for gluaxspeed/r2wc written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/gluaxspeed/r2wc/Cargo.toml
[INFO] started frobbing gluaxspeed/r2wc
[INFO] finished frobbing gluaxspeed/r2wc
[INFO] frobbed toml for gluaxspeed/r2wc written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/gluaxspeed/r2wc/Cargo.toml
[INFO] crate gluaxspeed/r2wc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gluaxspeed/r2wc against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/gluaxspeed/r2wc:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1a2df140077a9d83120d1c8220fe8d9dde27d31d7e4205e4a9b5ae3e82af438c
[INFO] running `"docker" "start" "-a" "1a2df140077a9d83120d1c8220fe8d9dde27d31d7e4205e4a9b5ae3e82af438c"`
[INFO] [stderr]    Compiling ncurses v5.94.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]     Checking r2wc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `get_client`
[INFO] [stderr]   --> src/connection/peer.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn get_client(server: &TcpListener) -> Option<Peer> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_port`
[INFO] [stderr]   --> src/connection.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn set_port() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_server`
[INFO] [stderr]   --> src/connection.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn create_server() -> TcpListener {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_peer`
[INFO] [stderr]   --> src/connection.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn get_peer(&self) -> Option<Peer> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_connection`
[INFO] [stderr]   --> src/connection.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_server_connection`
[INFO] [stderr]    --> src/connection.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn new_server_connection(msg_size: usize) -> (Connection, TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `await_client`
[INFO] [stderr]    --> src/connection.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `await_client_timeout`
[INFO] [stderr]    --> src/connection.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn await_client_timeout(&mut self, server: &TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reject_other_clients`
[INFO] [stderr]    --> src/connection.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn reject_other_clients(&self, server: &TcpListener) -> (bool, Option<Peer>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_client`
[INFO] [stderr]   --> src/connection/peer.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn get_client(server: &TcpListener) -> Option<Peer> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_port`
[INFO] [stderr]   --> src/connection.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn set_port() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_server`
[INFO] [stderr]   --> src/connection.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn create_server() -> TcpListener {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_peer`
[INFO] [stderr]   --> src/connection.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn get_peer(&self) -> Option<Peer> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_connection`
[INFO] [stderr]   --> src/connection.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_server_connection`
[INFO] [stderr]    --> src/connection.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn new_server_connection(msg_size: usize) -> (Connection, TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `await_client`
[INFO] [stderr]    --> src/connection.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `await_client_timeout`
[INFO] [stderr]    --> src/connection.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn await_client_timeout(&mut self, server: &TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reject_other_clients`
[INFO] [stderr]    --> src/connection.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn reject_other_clients(&self, server: &TcpListener) -> (bool, Option<Peer>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/connection/peer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn new(stream: TcpStream, who: String) -> Peer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_server_port`
[INFO] [stderr]   --> src/connection.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn set_server_port() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `connect_server`
[INFO] [stderr]   --> src/connection.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn connect_server() -> TcpStream {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_connection`
[INFO] [stderr]   --> src/connection.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_client_connection`
[INFO] [stderr]    --> src/connection.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn new_client_connection(msg_size: usize) -> Connection {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `await_client`
[INFO] [stderr]    --> src/connection.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/connection/peer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn new(stream: TcpStream, who: String) -> Peer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_server_port`
[INFO] [stderr]   --> src/connection.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn set_server_port() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `connect_server`
[INFO] [stderr]   --> src/connection.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn connect_server() -> TcpStream {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_connection`
[INFO] [stderr]   --> src/connection.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_client_connection`
[INFO] [stderr]    --> src/connection.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn new_client_connection(msg_size: usize) -> Connection {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `await_client`
[INFO] [stderr]    --> src/connection.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.93s
[INFO] running `"docker" "inspect" "1a2df140077a9d83120d1c8220fe8d9dde27d31d7e4205e4a9b5ae3e82af438c"`
[INFO] running `"docker" "rm" "-f" "1a2df140077a9d83120d1c8220fe8d9dde27d31d7e4205e4a9b5ae3e82af438c"`
[INFO] [stdout] 1a2df140077a9d83120d1c8220fe8d9dde27d31d7e4205e4a9b5ae3e82af438c