[INFO] updating cached repository https://github.com/wreien/snake-arena
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab674810c77fe5f72c430e8e08ec94b34ad1634e
[INFO] checking wreien/snake-arena against try#3ae4c050387df9f7fbb379ee90ce8bf05e566870 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwreien%2Fsnake-arena" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wreien/snake-arena on toolchain 3ae4c050387df9f7fbb379ee90ce8bf05e566870
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wreien/snake-arena
[INFO] finished tweaking git repo https://github.com/wreien/snake-arena
[INFO] tweaked toml for git repo https://github.com/wreien/snake-arena written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/wreien/snake-arena already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "/opt/rustwide/cargo-home/bin/cargo" "+3ae4c050387df9f7fbb379ee90ce8bf05e566870" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 67960783a59482432a0fde7fb0b5e5783f7d3bda12a9709e8fc7289d38908f6e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "67960783a59482432a0fde7fb0b5e5783f7d3bda12a9709e8fc7289d38908f6e"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking headers-core v0.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking headers v0.2.3
[INFO] [stderr]     Checking tungstenite v0.9.1
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling markup-proc-macro v0.4.1
[INFO] [stderr]     Checking markup v0.4.1
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking warp v0.1.20
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:142:84
[INFO] [stderr]     |
[INFO] [stderr] 142 | ...                   input[hidden? = true, name = "waiter", value = {a}];
[INFO] [stderr]     |                                                                      ^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:238:38
[INFO] [stderr]     |
[INFO] [stderr] 238 | ...                   id = {format!("waiters-{}", i)},
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:239:41
[INFO] [stderr]     |
[INFO] [stderr] 239 | ...                   value = {addr},
[INFO] [stderr]     |                               ^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:242:60
[INFO] [stderr]     |
[INFO] [stderr] 242 | ...                   label."form-check-label"[for = {format!("waiters-{}", i)}] {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:142:84
[INFO] [stderr]     |
[INFO] [stderr] 142 | ...                   input[hidden? = true, name = "waiter", value = {a}];
[INFO] [stderr]     |                                                                      ^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:238:38
[INFO] [stderr]     |
[INFO] [stderr] 238 | ...                   id = {format!("waiters-{}", i)},
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:239:41
[INFO] [stderr]     |
[INFO] [stderr] 239 | ...                   value = {addr},
[INFO] [stderr]     |                               ^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/html.rs:242:60
[INFO] [stderr]     |
[INFO] [stderr] 242 | ...                   label."form-check-label"[for = {format!("waiters-{}", i)}] {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.42s
[INFO] running `"docker" "inspect" "67960783a59482432a0fde7fb0b5e5783f7d3bda12a9709e8fc7289d38908f6e"`
[INFO] running `"docker" "rm" "-f" "67960783a59482432a0fde7fb0b5e5783f7d3bda12a9709e8fc7289d38908f6e"`
[INFO] [stdout] 67960783a59482432a0fde7fb0b5e5783f7d3bda12a9709e8fc7289d38908f6e