[INFO] cloning repository https://github.com/buxx/rollac
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/buxx/rollac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuxx%2Frollac", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuxx%2Frollac'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81962ddff70e355f78094bfee762b7f4870438c2
[INFO] checking buxx/rollac against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuxx%2Frollac" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/buxx/rollac on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/buxx/rollac
[INFO] finished tweaking git repo https://github.com/buxx/rollac
[INFO] tweaked toml for git repo https://github.com/buxx/rollac written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/buxx/rollac already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.57
[INFO] [stderr]   Downloaded async-std v1.8.0
[INFO] [stderr]   Downloaded websocket-base v0.26.2
[INFO] [stderr]   Downloaded websocket v0.26.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e3c3beba69d2dfc2fdb1394096b2a569069b719c2b144082d151c3e28ee572fe
[INFO] running `Command { std: "docker" "start" "-a" "e3c3beba69d2dfc2fdb1394096b2a569069b719c2b144082d151c3e28ee572fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3c3beba69d2dfc2fdb1394096b2a569069b719c2b144082d151c3e28ee572fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c3beba69d2dfc2fdb1394096b2a569069b719c2b144082d151c3e28ee572fe", kill_on_drop: false }`
[INFO] [stdout] e3c3beba69d2dfc2fdb1394096b2a569069b719c2b144082d151c3e28ee572fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80d403ea84a22785c22f2d8f2aef224a1bb03c2a419cf2ac1566632abc2c54e9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80d403ea84a22785c22f2d8f2aef224a1bb03c2a419cf2ac1566632abc2c54e9", kill_on_drop: false }`
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[INFO] [stderr]    Compiling pin-project-internal v1.0.2
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[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
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[INFO] [stderr]     Checking structopt v0.3.21
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[INFO] [stderr]     Checking futures-executor v0.3.8
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[INFO] [stderr]     Checking hyper v0.13.9
[INFO] [stderr]     Checking hyper-tls v0.4.3
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[INFO] [stderr]     Checking rollac v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `ws_reader_handle`
[INFO] [stdout]   --> src/socket.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     ws_reader_handle: Option<JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ws_sender_handle`
[INFO] [stdout]   --> src/socket.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     ws_sender_handle: Option<JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `closing`
[INFO] [stdout]   --> src/socket.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     closing: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `close`
[INFO] [stdout]    --> src/socket.rs:181:18
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub async fn close(&mut self) -> Result<(), error::Error> {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tile_id`
[INFO] [stdout]   --> src/world.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn tile_id(&self, row_i: i32, col_i: i32) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ws_reader_handle`
[INFO] [stdout]   --> src/socket.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     ws_reader_handle: Option<JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ws_sender_handle`
[INFO] [stdout]   --> src/socket.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     ws_sender_handle: Option<JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `closing`
[INFO] [stdout]   --> src/socket.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     closing: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `close`
[INFO] [stdout]    --> src/socket.rs:181:18
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub async fn close(&mut self) -> Result<(), error::Error> {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tile_id`
[INFO] [stdout]   --> src/world.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn tile_id(&self, row_i: i32, col_i: i32) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 04s
[INFO] running `Command { std: "docker" "inspect" "80d403ea84a22785c22f2d8f2aef224a1bb03c2a419cf2ac1566632abc2c54e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80d403ea84a22785c22f2d8f2aef224a1bb03c2a419cf2ac1566632abc2c54e9", kill_on_drop: false }`
[INFO] [stdout] 80d403ea84a22785c22f2d8f2aef224a1bb03c2a419cf2ac1566632abc2c54e9