[INFO] fetching crate fftp 0.2.0...
[INFO] checking fftp-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate fftp 0.2.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate fftp 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fftp 0.2.0
[INFO] finished tweaking crates.io crate fftp 0.2.0
[INFO] tweaked toml for crates.io crate fftp 0.2.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate fftp 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded igd v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] d537f14e0cb83e9c0a5f046c58feac9a65f2f1b31e589d241a8ff57dcc747b94
[INFO] running `Command { std: "docker" "start" "-a" "d537f14e0cb83e9c0a5f046c58feac9a65f2f1b31e589d241a8ff57dcc747b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d537f14e0cb83e9c0a5f046c58feac9a65f2f1b31e589d241a8ff57dcc747b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d537f14e0cb83e9c0a5f046c58feac9a65f2f1b31e589d241a8ff57dcc747b94", kill_on_drop: false }`
[INFO] [stdout] d537f14e0cb83e9c0a5f046c58feac9a65f2f1b31e589d241a8ff57dcc747b94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 429fc828de6c86216245efd2a6f3d1a29aace93b2cdf6994bdf9768428fe2cc7
[INFO] running `Command { std: "docker" "start" "-a" "429fc828de6c86216245efd2a6f3d1a29aace93b2cdf6994bdf9768428fe2cc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
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[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
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[INFO] [stderr]     Checking itoa v0.4.8
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[INFO] [stderr]     Checking tinyvec_macros v0.1.0
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[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking try-lock v0.2.3
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[INFO] [stderr]    Compiling futures-macro v0.3.17
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[INFO] [stderr]    Compiling tokio v1.12.0
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[INFO] [stderr]     Checking tracing v0.1.28
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking socket2 v0.4.2
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[INFO] [stderr]    Compiling tokio-macros v1.3.0
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[INFO] [stderr]     Checking futures-executor v0.3.17
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[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking igd v0.12.0
[INFO] [stderr]     Checking fftp v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `ConnectionTimeout`
[INFO] [stdout]   --> src/proto.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     ConnectionTimeout,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ImpossibleDataLen`
[INFO] [stdout]   --> src/proto.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     ImpossibleDataLen(u32),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedType`
[INFO] [stdout]   --> src/proto.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     UnexpectedType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WrongChecksum`
[INFO] [stdout]   --> src/proto.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     WrongChecksum,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Client`
[INFO] [stdout]   --> src/proto.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct Client {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `recv`
[INFO] [stdout]    --> src/proto.rs:136:18
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub async fn recv(&mut self) -> Option<Response> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send`
[INFO] [stdout]    --> src/proto.rs:140:18
[INFO] [stdout]     |
[INFO] [stdout] 140 |     pub async fn send(&self, r: Request) -> Result<(), Error> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bind_ext`
[INFO] [stdout]    --> src/proto.rs:169:18
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub async fn bind_ext(port: u16) -> Result<Self, Error> {
[INFO] [stdout]     |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_client`
[INFO] [stdout]    --> src/proto.rs:205:18
[INFO] [stdout]     |
[INFO] [stdout] 205 |     pub async fn start_client<A: ToSocketAddrs>(
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ConnectionTimeout`
[INFO] [stdout]   --> src/proto.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     ConnectionTimeout,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ImpossibleDataLen`
[INFO] [stdout]   --> src/proto.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     ImpossibleDataLen(u32),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedType`
[INFO] [stdout]   --> src/proto.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     UnexpectedType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WrongChecksum`
[INFO] [stdout]   --> src/proto.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     WrongChecksum,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Client`
[INFO] [stdout]   --> src/proto.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct Client {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `recv`
[INFO] [stdout]    --> src/proto.rs:136:18
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub async fn recv(&mut self) -> Option<Response> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send`
[INFO] [stdout]    --> src/proto.rs:140:18
[INFO] [stdout]     |
[INFO] [stdout] 140 |     pub async fn send(&self, r: Request) -> Result<(), Error> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bind_ext`
[INFO] [stdout]    --> src/proto.rs:169:18
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub async fn bind_ext(port: u16) -> Result<Self, Error> {
[INFO] [stdout]     |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_client`
[INFO] [stdout]    --> src/proto.rs:205:18
[INFO] [stdout]     |
[INFO] [stdout] 205 |     pub async fn start_client<A: ToSocketAddrs>(
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_SIZE`
[INFO] [stdout]   --> src/proto.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub const DATA_SIZE: usize = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ConnectionTimeout`
[INFO] [stdout]   --> src/proto.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     ConnectionTimeout,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ImpossibleDataLen`
[INFO] [stdout]   --> src/proto.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     ImpossibleDataLen(u32),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedType`
[INFO] [stdout]   --> src/proto.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     UnexpectedType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WrongChecksum`
[INFO] [stdout]   --> src/proto.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     WrongChecksum,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Listener`
[INFO] [stdout]   --> src/proto.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct Listener {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `recv`
[INFO] [stdout]    --> src/proto.rs:125:18
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub async fn recv(&mut self) -> Option<(Request, SocketAddr)> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send`
[INFO] [stdout]    --> src/proto.rs:130:18
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub async fn send(&self, r: (Response, SocketAddr)) -> Result<(), Error> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_server`
[INFO] [stdout]    --> src/proto.rs:179:18
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub async fn start_server(self) -> (Listener, JoinHandle<()>) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_SIZE`
[INFO] [stdout]   --> src/proto.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub const DATA_SIZE: usize = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ConnectionTimeout`
[INFO] [stdout]   --> src/proto.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     ConnectionTimeout,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ImpossibleDataLen`
[INFO] [stdout]   --> src/proto.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     ImpossibleDataLen(u32),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedType`
[INFO] [stdout]   --> src/proto.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     UnexpectedType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WrongChecksum`
[INFO] [stdout]   --> src/proto.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     WrongChecksum,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Listener`
[INFO] [stdout]   --> src/proto.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct Listener {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `recv`
[INFO] [stdout]    --> src/proto.rs:125:18
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub async fn recv(&mut self) -> Option<(Request, SocketAddr)> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send`
[INFO] [stdout]    --> src/proto.rs:130:18
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub async fn send(&self, r: (Response, SocketAddr)) -> Result<(), Error> {
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_server`
[INFO] [stdout]    --> src/proto.rs:179:18
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub async fn start_server(self) -> (Listener, JoinHandle<()>) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.72s
[INFO] running `Command { std: "docker" "inspect" "429fc828de6c86216245efd2a6f3d1a29aace93b2cdf6994bdf9768428fe2cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "429fc828de6c86216245efd2a6f3d1a29aace93b2cdf6994bdf9768428fe2cc7", kill_on_drop: false }`
[INFO] [stdout] 429fc828de6c86216245efd2a6f3d1a29aace93b2cdf6994bdf9768428fe2cc7