[INFO] cloning repository https://github.com/ischeinkman/MediaSync
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ischeinkman/MediaSync" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fischeinkman%2FMediaSync", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fischeinkman%2FMediaSync'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5b653b933aa788f5af2073e812c2ea569935228
[INFO] checking ischeinkman/MediaSync against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fischeinkman%2FMediaSync" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ischeinkman/MediaSync on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ischeinkman/MediaSync
[INFO] finished tweaking git repo https://github.com/ischeinkman/MediaSync
[INFO] tweaked toml for git repo https://github.com/ischeinkman/MediaSync written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ischeinkman/MediaSync already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", 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] 8769ff5c99fdd083aab0332f0e8bb333a9f8b57533667a8e22a7d9b9102d2de1
[INFO] running `Command { std: "docker" "start" "-a" "8769ff5c99fdd083aab0332f0e8bb333a9f8b57533667a8e22a7d9b9102d2de1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8769ff5c99fdd083aab0332f0e8bb333a9f8b57533667a8e22a7d9b9102d2de1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8769ff5c99fdd083aab0332f0e8bb333a9f8b57533667a8e22a7d9b9102d2de1", kill_on_drop: false }`
[INFO] [stdout] 8769ff5c99fdd083aab0332f0e8bb333a9f8b57533667a8e22a7d9b9102d2de1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16f1bcce2833a79e1ce81d25946ea4c92824e74762da52d0f946e809a454bedf
[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" "16f1bcce2833a79e1ce81d25946ea4c92824e74762da52d0f946e809a454bedf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking vlcsync v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `con`
[INFO] [stdout]    --> src/network/publicaddr.rs:223:54
[INFO] [stdout]     |
[INFO] [stdout] 223 |         let stun_res = if let OpenPublicArgs::UdpCon(con) = args {
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_con`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/players.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut retvl = Vec::new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `con`
[INFO] [stdout]    --> src/network/publicaddr.rs:223:54
[INFO] [stdout]     |
[INFO] [stdout] 223 |         let stun_res = if let OpenPublicArgs::UdpCon(con) = args {
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_con`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_spawn`
[INFO] [stdout]   --> src/utils.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn generate_spawn<
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/utils.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_woken`
[INFO] [stdout]   --> src/utils.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn has_woken(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `block_on`
[INFO] [stdout]   --> src/utils.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn block_on<F: std::future::Future>(fut: F) -> F::Output {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/players.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut retvl = Vec::new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generate_spawn`
[INFO] [stdout]   --> src/utils.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn generate_spawn<
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/utils.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_woken`
[INFO] [stdout]   --> src/utils.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn has_woken(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `block_on`
[INFO] [stdout]   --> src/utils.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn block_on<F: std::future::Future>(fut: F) -> F::Output {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.35s
[INFO] running `Command { std: "docker" "inspect" "16f1bcce2833a79e1ce81d25946ea4c92824e74762da52d0f946e809a454bedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16f1bcce2833a79e1ce81d25946ea4c92824e74762da52d0f946e809a454bedf", kill_on_drop: false }`
[INFO] [stdout] 16f1bcce2833a79e1ce81d25946ea4c92824e74762da52d0f946e809a454bedf