[INFO] cloning repository https://github.com/chrischalstrom/mud_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrischalstrom/mud_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrischalstrom%2Fmud_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrischalstrom%2Fmud_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 705795f40747763483c82e5fc37001426c4a9196
[INFO] checking chrischalstrom/mud_engine against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrischalstrom%2Fmud_engine" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrischalstrom/mud_engine on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chrischalstrom/mud_engine
[INFO] finished tweaking git repo https://github.com/chrischalstrom/mud_engine
[INFO] tweaked toml for git repo https://github.com/chrischalstrom/mud_engine written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/chrischalstrom/mud_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2d09f6eac4b208d3967c69a8ad73fd8b5b705e8e2fe2fb0cdc8a9c3f81797d7
[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" "a2d09f6eac4b208d3967c69a8ad73fd8b5b705e8e2fe2fb0cdc8a9c3f81797d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2d09f6eac4b208d3967c69a8ad73fd8b5b705e8e2fe2fb0cdc8a9c3f81797d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2d09f6eac4b208d3967c69a8ad73fd8b5b705e8e2fe2fb0cdc8a9c3f81797d7", kill_on_drop: false }`
[INFO] [stdout] a2d09f6eac4b208d3967c69a8ad73fd8b5b705e8e2fe2fb0cdc8a9c3f81797d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db9e7feaf7ac46e584378eb905044e43ab3a85afd42cc30d210c78f0df1bae80
[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" "db9e7feaf7ac46e584378eb905044e43ab3a85afd42cc30d210c78f0df1bae80", kill_on_drop: false }`
[INFO] [stderr]     Checking mud_host v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/combat.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn attack(&self, other: &mut Attackable) -> i32;
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Attackable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/command_processor.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn listen(processor: &CommandProcessor, tx: mpsc::Sender<String>) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CommandProcessor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/monster.rs:11:34
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn attack(&self, other: &mut Attackable) -> i32 {
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Attackable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/player.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn attack(&self, other: &mut Attackable) -> i32 {
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Attackable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/combat.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn attack(&self, other: &mut Attackable) -> i32;
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Attackable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/command_processor.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn listen(processor: &CommandProcessor, tx: mpsc::Sender<String>) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CommandProcessor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/monster.rs:11:34
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn attack(&self, other: &mut Attackable) -> i32 {
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Attackable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/player.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn attack(&self, other: &mut Attackable) -> i32 {
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Attackable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "db9e7feaf7ac46e584378eb905044e43ab3a85afd42cc30d210c78f0df1bae80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db9e7feaf7ac46e584378eb905044e43ab3a85afd42cc30d210c78f0df1bae80", kill_on_drop: false }`
[INFO] [stdout] db9e7feaf7ac46e584378eb905044e43ab3a85afd42cc30d210c78f0df1bae80