[INFO] fetching crate tello 0.6.3...
[INFO] testing tello-0.6.3 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate tello 0.6.3 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate tello 0.6.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tello 0.6.3
[INFO] tweaked toml for crates.io crate tello 0.6.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tello 0.6.3 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tello 0.6.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-stream v0.1.7
[INFO] [stderr]   Downloaded tokio-macros v1.3.0
[INFO] [stderr]   Downloaded libudev-sys v0.1.4
[INFO] [stderr]   Downloaded futures-executor v0.3.16
[INFO] [stderr]   Downloaded num-integer v0.1.41
[INFO] [stderr]   Downloaded slab v0.4.4
[INFO] [stderr]   Downloaded mach v0.2.3
[INFO] [stderr]   Downloaded num-traits v0.2.10
[INFO] [stderr]   Downloaded futures v0.3.16
[INFO] [stderr]   Downloaded mio v0.7.13
[INFO] [stderr]   Downloaded tokio-util v0.6.8
[INFO] [stderr]   Downloaded io-kit-sys v0.1.0
[INFO] [stderr]   Downloaded ntapi v0.3.4
[INFO] [stderr]   Downloaded cc v1.0.57
[INFO] [stderr]   Downloaded gilrs-core v0.2.6
[INFO] [stderr]   Downloaded sdl2 v0.34.5
[INFO] [stderr]   Downloaded nix v0.15.0
[INFO] [stderr]   Downloaded uuid v0.8.1
[INFO] [stderr]   Downloaded bytes v1.1.0
[INFO] [stderr]   Downloaded pkg-config v0.3.17
[INFO] [stderr]   Downloaded rusty-xinput v1.2.0
[INFO] [stderr]   Downloaded gilrs v0.7.4
[INFO] [stderr]   Downloaded base-x v0.2.6
[INFO] [stderr]   Downloaded version-compare v0.0.10
[INFO] [stderr]   Downloaded sdl2-sys v0.34.5
[INFO] [stderr]   Downloaded libc v0.2.99
[INFO] [stderr]   Downloaded tokio v1.11.0
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec6610edbd1f08e288520a2231ee7498f1819ad27534409b33099f54a3749aaf
[INFO] running `Command { std: "docker" "start" "-a" "ec6610edbd1f08e288520a2231ee7498f1819ad27534409b33099f54a3749aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec6610edbd1f08e288520a2231ee7498f1819ad27534409b33099f54a3749aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec6610edbd1f08e288520a2231ee7498f1819ad27534409b33099f54a3749aaf", kill_on_drop: false }`
[INFO] [stdout] ec6610edbd1f08e288520a2231ee7498f1819ad27534409b33099f54a3749aaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ef8b93a235c900a5a2a0887b9c5d1f6c923ff18c1e5851c51d160e34537a24a
[INFO] running `Command { std: "docker" "start" "-a" "6ef8b93a235c900a5a2a0887b9c5d1f6c923ff18c1e5851c51d160e34537a24a", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling tello v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `level` is never read
[INFO] [stdout]    --> src/lib.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | struct VideoSettings {
[INFO] [stdout]     |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 160 |     pub level: u8,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VideoSettings` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `strength` and `disturb` are never read
[INFO] [stdout]    --> src/drone_state.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct WifiInfo {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 152 |     strength: u8,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 153 |     disturb: u8,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WifiInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `good` is never read
[INFO] [stdout]    --> src/drone_state.rs:169:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct LightInfo {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 169 |     good: bool,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LightInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/command_mode.rs:67:60
[INFO] [stdout]    |
[INFO] [stdout] 67 |                     match (param.get(0).and_then(|v| Some(v.clone())), param.get(1)) {
[INFO] [stdout]    |                                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.98s
[INFO] running `Command { std: "docker" "inspect" "6ef8b93a235c900a5a2a0887b9c5d1f6c923ff18c1e5851c51d160e34537a24a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef8b93a235c900a5a2a0887b9c5d1f6c923ff18c1e5851c51d160e34537a24a", kill_on_drop: false }`
[INFO] [stdout] 6ef8b93a235c900a5a2a0887b9c5d1f6c923ff18c1e5851c51d160e34537a24a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b46f9796b87650d5d3455a2caf72a2e067f2134b01543c2026c3aa5555ab8c20
[INFO] running `Command { std: "docker" "start" "-a" "b46f9796b87650d5d3455a2caf72a2e067f2134b01543c2026c3aa5555ab8c20", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stdout] warning: field `level` is never read
[INFO] [stdout]    --> src/lib.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | struct VideoSettings {
[INFO] [stdout]     |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 160 |     pub level: u8,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VideoSettings` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `strength` and `disturb` are never read
[INFO] [stdout]    --> src/drone_state.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct WifiInfo {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 152 |     strength: u8,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 153 |     disturb: u8,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WifiInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `good` is never read
[INFO] [stdout]    --> src/drone_state.rs:169:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct LightInfo {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 169 |     good: bool,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LightInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/command_mode.rs:67:60
[INFO] [stdout]    |
[INFO] [stdout] 67 |                     match (param.get(0).and_then(|v| Some(v.clone())), param.get(1)) {
[INFO] [stdout]    |                                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling gilrs-core v0.2.6
[INFO] [stderr]    Compiling gilrs v0.7.4
[INFO] [stderr]    Compiling futures-executor v0.3.16
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling tello v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `recv_timeout` found for struct `tokio::sync::watch::Receiver<T>` in the current scope
[INFO] [stdout]   --> examples/command_mode/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |         match state.recv_timeout(Duration::from_secs(5)) {
[INFO] [stdout]    |                     ^^^^^^^^^^^^ method not found in `tokio::sync::watch::Receiver<Option<CommandModeState>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MissingElement` is never constructed
[INFO] [stdout]   --> examples/fly/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct MissingElement(&'static str);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tello` (example "command_mode") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `try_recv` found for struct `tokio::sync::watch::Receiver<T>` in the current scope
[INFO] [stdout]   --> examples/command_mode_keyboard/main.rs:46:25
[INFO] [stdout]    |
[INFO] [stdout] 46 |             match state.try_recv() {
[INFO] [stdout]    |                         ^^^^^^^^ method not found in `tokio::sync::watch::Receiver<Option<CommandModeState>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tello` (example "command_mode_keyboard") due to 1 previous error
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/tmp/rustcfpD5aj/symbols.o" "<2 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libtello-f568c04dfcdc2d2c,libtokio-d7bbce3e9f3a7285,libnum_cpus-4e6c756fdd550287,libpin_project_lite-e686f189f307e605,libmio-c4bc34e7e418fa52,liblog-2796cc19bfbad145,libcfg_if-7e9efee4241be1ca,libchrono-aad410f06beec09b,libnum_integer-389099a0701e10cc,libnum_traits-d8cc3ecbaa562fd5,libtime-5294666cc2cd2dc4,libbyteorder-379f547b04d51d02,libsdl2-cca9f0b840e07926,libsdl2_sys-c9495e1717285372,libbitflags-0629d6d36c0d1ed3,liblazy_static-2bb390fee0230a38,liblibc-43c5388493ca342a}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,libcfg_if-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lSDL2" "-lSDL2_ttf" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustcfpD5aj/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/examples/fly-430236f09f386a67" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: unable to find library -lSDL2_ttf
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tello` (example "fly") due to 1 previous error; 1 warning emitted
[INFO] [stdout] warning: field `level` is never read
[INFO] [stdout]    --> src/lib.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | struct VideoSettings {
[INFO] [stdout]     |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 160 |     pub level: u8,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VideoSettings` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `strength` and `disturb` are never read
[INFO] [stdout]    --> src/drone_state.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct WifiInfo {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 152 |     strength: u8,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 153 |     disturb: u8,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WifiInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `good` is never read
[INFO] [stdout]    --> src/drone_state.rs:169:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct LightInfo {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 169 |     good: bool,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LightInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/command_mode.rs:67:60
[INFO] [stdout]    |
[INFO] [stdout] 67 |                     match (param.get(0).and_then(|v| Some(v.clone())), param.get(1)) {
[INFO] [stdout]    |                                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/tmp/rustcfytdwd/symbols.o" "<2 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libtello-f568c04dfcdc2d2c,libtokio-d7bbce3e9f3a7285,libnum_cpus-4e6c756fdd550287,libpin_project_lite-e686f189f307e605,libmio-c4bc34e7e418fa52,libchrono-aad410f06beec09b,libnum_integer-389099a0701e10cc,libnum_traits-d8cc3ecbaa562fd5,libtime-5294666cc2cd2dc4,libbyteorder-379f547b04d51d02,libgilrs-b4b668d92727992a,libgilrs_core-022e4b0e466fd92b,liblog-2796cc19bfbad145,libuuid-e2c5650602083571,libvec_map-ecbce826993378bd,libnix-de2648b05ccabefe,libvoid-c8c62e9ffd6f4978,libcfg_if-7e9efee4241be1ca,liblibudev_sys-19b167d970408f77,libfnv-2d77ec4f6f971b24,libsdl2-cca9f0b840e07926,libsdl2_sys-c9495e1717285372,libbitflags-0629d6d36c0d1ed3,liblazy_static-2bb390fee0230a38,liblibc-43c5388493ca342a}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,libcfg_if-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-ludev" "-lSDL2" "-lSDL2_ttf" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustcfytdwd/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/examples/fly_gamepad-5bb6bd7a1433e3c2" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: unable to find library -lSDL2_ttf
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tello` (example "fly_gamepad") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b46f9796b87650d5d3455a2caf72a2e067f2134b01543c2026c3aa5555ab8c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b46f9796b87650d5d3455a2caf72a2e067f2134b01543c2026c3aa5555ab8c20", kill_on_drop: false }`
[INFO] [stdout] b46f9796b87650d5d3455a2caf72a2e067f2134b01543c2026c3aa5555ab8c20