[INFO] cloning repository https://github.com/robn/twister
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robn/twister" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobn%2Ftwister", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobn%2Ftwister'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3323bcd554bd2dbf24d7d67a05ec92733068260
[INFO] checking robn/twister against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobn%2Ftwister" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robn/twister on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/robn/twister
[INFO] finished tweaking git repo https://github.com/robn/twister
[INFO] tweaked toml for git repo https://github.com/robn/twister written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/robn/twister already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bimap v0.6.0
[INFO] [stderr]   Downloaded hecs v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 025183b110a75c6998a4fa599deaf95f38b171f143fd66aa1f42382f26866231
[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" "025183b110a75c6998a4fa599deaf95f38b171f143fd66aa1f42382f26866231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "025183b110a75c6998a4fa599deaf95f38b171f143fd66aa1f42382f26866231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "025183b110a75c6998a4fa599deaf95f38b171f143fd66aa1f42382f26866231", kill_on_drop: false }`
[INFO] [stdout] 025183b110a75c6998a4fa599deaf95f38b171f143fd66aa1f42382f26866231
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc7271b4dcc37a6d7a30d0ab85df7be5e1bb44e1fdba624ac0a5e2b9b50d6948
[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" "bc7271b4dcc37a6d7a30d0ab85df7be5e1bb44e1fdba624ac0a5e2b9b50d6948", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking bimap v0.6.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking hecs v0.3.2
[INFO] [stderr]     Checking mio v0.7.9
[INFO] [stderr]     Checking twister v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]    --> src/server.rs:123:35
[INFO] [stdout]     |
[INFO] [stdout] 123 |                   if let Some((_, entity)) = self.token_entity.remove_by_left(&token) {
[INFO] [stdout]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/channel.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     .for_each(|(entity, io)| {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/channel.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |     .for_each(|(entity, c)| {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]    --> src/server.rs:123:35
[INFO] [stdout]     |
[INFO] [stdout] 123 |                   if let Some((_, entity)) = self.token_entity.remove_by_left(&token) {
[INFO] [stdout]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/channel.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     .for_each(|(entity, io)| {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/channel.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |     .for_each(|(entity, c)| {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.07s
[INFO] running `Command { std: "docker" "inspect" "bc7271b4dcc37a6d7a30d0ab85df7be5e1bb44e1fdba624ac0a5e2b9b50d6948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7271b4dcc37a6d7a30d0ab85df7be5e1bb44e1fdba624ac0a5e2b9b50d6948", kill_on_drop: false }`
[INFO] [stdout] bc7271b4dcc37a6d7a30d0ab85df7be5e1bb44e1fdba624ac0a5e2b9b50d6948