[INFO] cloning repository https://github.com/RebeccaSyria/mud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RebeccaSyria/mud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRebeccaSyria%2Fmud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRebeccaSyria%2Fmud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8f2a8d5def731212f3b69b4757de84f288e685a
[INFO] testing RebeccaSyria/mud against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRebeccaSyria%2Fmud" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RebeccaSyria/mud on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RebeccaSyria/mud
[INFO] finished tweaking git repo https://github.com/RebeccaSyria/mud
[INFO] tweaked toml for git repo https://github.com/RebeccaSyria/mud written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/RebeccaSyria/mud already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9713ce303a4a4fbd6ba7d725023855cb26283e82518e16c86ad27830c2894ff5
[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" "9713ce303a4a4fbd6ba7d725023855cb26283e82518e16c86ad27830c2894ff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9713ce303a4a4fbd6ba7d725023855cb26283e82518e16c86ad27830c2894ff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9713ce303a4a4fbd6ba7d725023855cb26283e82518e16c86ad27830c2894ff5", kill_on_drop: false }`
[INFO] [stdout] 9713ce303a4a4fbd6ba7d725023855cb26283e82518e16c86ad27830c2894ff5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef627e75eca567fa2402356fd1587d59965c8cc7e24077dc5f7d7aa09d2511ed
[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" "ef627e75eca567fa2402356fd1587d59965c8cc7e24077dc5f7d7aa09d2511ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling mud v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]   --> src/main.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut output = "";
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `room_name`
[INFO] [stdout]  --> src/room.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     room_name: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `room_id`
[INFO] [stdout]  --> src/room.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     room_id: i32,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `messages`
[INFO] [stdout]  --> src/room.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     messages: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "ef627e75eca567fa2402356fd1587d59965c8cc7e24077dc5f7d7aa09d2511ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef627e75eca567fa2402356fd1587d59965c8cc7e24077dc5f7d7aa09d2511ed", kill_on_drop: false }`
[INFO] [stdout] ef627e75eca567fa2402356fd1587d59965c8cc7e24077dc5f7d7aa09d2511ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 014fe17e88c3dfbaa00ddbe2965716eaef14326863eba33710bcc03818952070
[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" "014fe17e88c3dfbaa00ddbe2965716eaef14326863eba33710bcc03818952070", kill_on_drop: false }`
[INFO] [stderr]    Compiling mud v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]   --> src/main.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut output = "";
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `room_name`
[INFO] [stdout]  --> src/room.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     room_name: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `room_id`
[INFO] [stdout]  --> src/room.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     room_id: i32,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `messages`
[INFO] [stdout]  --> src/room.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     messages: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "014fe17e88c3dfbaa00ddbe2965716eaef14326863eba33710bcc03818952070", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "014fe17e88c3dfbaa00ddbe2965716eaef14326863eba33710bcc03818952070", kill_on_drop: false }`
[INFO] [stdout] 014fe17e88c3dfbaa00ddbe2965716eaef14326863eba33710bcc03818952070
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 410991d6a43de27b6996cf15f393c6caf2d7d44eb811035ed757294ecbea76d3
[INFO] running `Command { std: "docker" "start" "-a" "410991d6a43de27b6996cf15f393c6caf2d7d44eb811035ed757294ecbea76d3", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `output` is never read
[INFO] [stderr]   --> src/main.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let mut output = "";
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `room_name`
[INFO] [stderr]  --> src/room.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     room_name: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `room_id`
[INFO] [stderr]  --> src/room.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     room_id: i32,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `messages`
[INFO] [stderr]  --> src/room.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     messages: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mud-92ca633ec19c0208
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "410991d6a43de27b6996cf15f393c6caf2d7d44eb811035ed757294ecbea76d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410991d6a43de27b6996cf15f393c6caf2d7d44eb811035ed757294ecbea76d3", kill_on_drop: false }`
[INFO] [stdout] 410991d6a43de27b6996cf15f393c6caf2d7d44eb811035ed757294ecbea76d3