[INFO] updating cached repository https://github.com/exacs/rust_four
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2799114ba72aa052aff634c068243a9b5c78b36
[INFO] checking exacs/rust_four against try#85cc1486e1f000dce4bb8e1b3cfab2b654b102a8 for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexacs%2Frust_four" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/exacs/rust_four on toolchain 85cc1486e1f000dce4bb8e1b3cfab2b654b102a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/exacs/rust_four
[INFO] finished tweaking git repo https://github.com/exacs/rust_four
[INFO] tweaked toml for git repo https://github.com/exacs/rust_four written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/exacs/rust_four already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38ed876292b13b5d3e82a4b8fc41ca211f854270afff5293d3334583b731d8e0
[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" "38ed876292b13b5d3e82a4b8fc41ca211f854270afff5293d3334583b731d8e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38ed876292b13b5d3e82a4b8fc41ca211f854270afff5293d3334583b731d8e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38ed876292b13b5d3e82a4b8fc41ca211f854270afff5293d3334583b731d8e0", kill_on_drop: false }`
[INFO] [stdout] 38ed876292b13b5d3e82a4b8fc41ca211f854270afff5293d3334583b731d8e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 630b39710c98c5f427784d219f4f5b2e2048488e72fd6dc290b9c5cea91d270f
[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" "630b39710c98c5f427784d219f4f5b2e2048488e72fd6dc290b9c5cea91d270f", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rust_four v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/game.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     black_player: &'a Player,
[INFO] [stdout]   |                       ^^^^^^ help: use `dyn`: `dyn Player`
[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/game.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     white_player: &'a Player,
[INFO] [stdout]    |                       ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |         black_player: &'a Player,
[INFO] [stdout]    |                           ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |         white_player: &'a Player,
[INFO] [stdout]    |                           ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/players/smart_player.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     dumb_player: Box<Player>,
[INFO] [stdout]   |                      ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/players/smart_player.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn new(dumb_player: Box<Player>) -> SmartPlayer {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/game.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     black_player: &'a Player,
[INFO] [stdout]   |                       ^^^^^^ help: use `dyn`: `dyn Player`
[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/game.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     white_player: &'a Player,
[INFO] [stdout]    |                       ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |         black_player: &'a Player,
[INFO] [stdout]    |                           ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |         white_player: &'a Player,
[INFO] [stdout]    |                           ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/players/smart_player.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     dumb_player: Box<Player>,
[INFO] [stdout]   |                      ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/players/smart_player.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn new(dumb_player: Box<Player>) -> SmartPlayer {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.65s
[INFO] running `Command { std: "docker" "inspect" "630b39710c98c5f427784d219f4f5b2e2048488e72fd6dc290b9c5cea91d270f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "630b39710c98c5f427784d219f4f5b2e2048488e72fd6dc290b9c5cea91d270f", kill_on_drop: false }`
[INFO] [stdout] 630b39710c98c5f427784d219f4f5b2e2048488e72fd6dc290b9c5cea91d270f