[INFO] cloning repository https://github.com/hamdav/luffarshack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hamdav/luffarshack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamdav%2Fluffarshack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamdav%2Fluffarshack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8800bfd93e8d611387adf31d2c5068804c5048bf
[INFO] building hamdav/luffarshack against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamdav%2Fluffarshack" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hamdav/luffarshack on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hamdav/luffarshack
[INFO] finished tweaking git repo https://github.com/hamdav/luffarshack
[INFO] tweaked toml for git repo https://github.com/hamdav/luffarshack written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hamdav/luffarshack 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41c3bcaa26ddfd3fd4653fa2b5fe81188e69d73fbb374f309910b0062bf773c0
[INFO] running `Command { std: "docker" "start" "-a" "41c3bcaa26ddfd3fd4653fa2b5fe81188e69d73fbb374f309910b0062bf773c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41c3bcaa26ddfd3fd4653fa2b5fe81188e69d73fbb374f309910b0062bf773c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41c3bcaa26ddfd3fd4653fa2b5fe81188e69d73fbb374f309910b0062bf773c0", kill_on_drop: false }`
[INFO] [stdout] 41c3bcaa26ddfd3fd4653fa2b5fe81188e69d73fbb374f309910b0062bf773c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94f163f5f835fccad219f367e9ebb3e15837965f1e152f69231d2d99446cab49
[INFO] running `Command { std: "docker" "start" "-a" "94f163f5f835fccad219f367e9ebb3e15837965f1e152f69231d2d99446cab49", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling regex v1.8.1
[INFO] [stderr]    Compiling luffarschack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/hobo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn move_is_legal(&self, c: Coord) -> bool {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/hobo.rs:42:33
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn make_move(&mut self, c: Coord) -> Result<(),()> {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/hobo.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn move_wins_game(&self, c: Coord) -> bool {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Player` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Player{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `game` is never used
[INFO] [stdout]   --> src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn game(p1: &mut Player, p2: &mut Player) -> io::Result<u32> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]  --> src/hobo.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Coord {
[INFO] [stdout]   | ---------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn from_string(s: &str) -> Option<Self> {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `X` and `O` are never constructed
[INFO] [stdout]   --> src/hobo.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum Mark{
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 24 |     X,
[INFO] [stdout]    |     ^
[INFO] [stdout] 25 |     O,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Mark` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HoboGame` is never constructed
[INFO] [stdout]   --> src/hobo.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct HoboGame {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `move_is_legal`, `make_move`, `move_wins_game`, `new`, and `to_string` are never used
[INFO] [stdout]   --> src/hobo.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl HoboGame {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 35 |     fn move_is_legal(&self, c: Coord) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn make_move(&mut self, c: Coord) -> Result<(),()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn move_wins_game(&self, c: Coord) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.22s
[INFO] running `Command { std: "docker" "inspect" "94f163f5f835fccad219f367e9ebb3e15837965f1e152f69231d2d99446cab49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f163f5f835fccad219f367e9ebb3e15837965f1e152f69231d2d99446cab49", kill_on_drop: false }`
[INFO] [stdout] 94f163f5f835fccad219f367e9ebb3e15837965f1e152f69231d2d99446cab49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb239ea1952779664d4fec68f1ba9f027cbf088d7d118fca4ffc335cf34d0fc2
[INFO] running `Command { std: "docker" "start" "-a" "bb239ea1952779664d4fec68f1ba9f027cbf088d7d118fca4ffc335cf34d0fc2", kill_on_drop: false }`
[INFO] [stderr]    Compiling luffarschack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/hobo.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn move_is_legal(&self, c: Coord) -> bool {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/hobo.rs:42:33
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn make_move(&mut self, c: Coord) -> Result<(),()> {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/hobo.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn move_wins_game(&self, c: Coord) -> bool {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Player` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Player{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `game` is never used
[INFO] [stdout]   --> src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn game(p1: &mut Player, p2: &mut Player) -> io::Result<u32> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]  --> src/hobo.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Coord {
[INFO] [stdout]   | ---------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn from_string(s: &str) -> Option<Self> {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `X` and `O` are never constructed
[INFO] [stdout]   --> src/hobo.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum Mark{
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 24 |     X,
[INFO] [stdout]    |     ^
[INFO] [stdout] 25 |     O,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Mark` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HoboGame` is never constructed
[INFO] [stdout]   --> src/hobo.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct HoboGame {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `move_is_legal`, `make_move`, `move_wins_game`, `new`, and `to_string` are never used
[INFO] [stdout]   --> src/hobo.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl HoboGame {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 35 |     fn move_is_legal(&self, c: Coord) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn make_move(&mut self, c: Coord) -> Result<(),()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn move_wins_game(&self, c: Coord) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "bb239ea1952779664d4fec68f1ba9f027cbf088d7d118fca4ffc335cf34d0fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb239ea1952779664d4fec68f1ba9f027cbf088d7d118fca4ffc335cf34d0fc2", kill_on_drop: false }`
[INFO] [stdout] bb239ea1952779664d4fec68f1ba9f027cbf088d7d118fca4ffc335cf34d0fc2