[INFO] fetching crate easyjack 0.1.2...
[INFO] checking easyjack-0.1.2 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] extracting crate easyjack 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate easyjack 0.1.2 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate easyjack 0.1.2
[INFO] finished tweaking crates.io crate easyjack 0.1.2
[INFO] tweaked toml for crates.io crate easyjack 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8927ff3b4680a0cb0e674542bcc7829e2127ce21a47876bce9bcfcc41840ec1
[INFO] running `Command { std: "docker" "start" "-a" "a8927ff3b4680a0cb0e674542bcc7829e2127ce21a47876bce9bcfcc41840ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8927ff3b4680a0cb0e674542bcc7829e2127ce21a47876bce9bcfcc41840ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8927ff3b4680a0cb0e674542bcc7829e2127ce21a47876bce9bcfcc41840ec1", kill_on_drop: false }`
[INFO] [stdout] a8927ff3b4680a0cb0e674542bcc7829e2127ce21a47876bce9bcfcc41840ec1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9e5704897fa071b4dca2dad98c678edf5b5b2b71d7eed203f0745c2c927c0cb
[INFO] running `Command { std: "docker" "start" "-a" "e9e5704897fa071b4dca2dad98c678edf5b5b2b71d7eed203f0745c2c927c0cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling easyjack v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking jack-sys v0.1.5
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stdout] warning: unused import: `types::*`
[INFO] [stdout]    --> src/client.rs:424:9
[INFO] [stdout]     |
[INFO] [stdout] 424 |     use types::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::*`
[INFO] [stdout]    --> src/client.rs:427:9
[INFO] [stdout]     |
[INFO] [stdout] 427 |     use std::ffi::*;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/types.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     bitflags! {
[INFO] [stdout] 24 | |     pub flags PortFlags: u32 {
[INFO] [stdout] 25 | |         /// if PortIsInput is set, then the port can receive data.
[INFO] [stdout] 26 | |         const PORT_IS_INPUT = jack_sys::JackPortIsInput,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     }
[INFO] [stdout] 57 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/types.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     bitflags! {
[INFO] [stdout] 24 | |     pub flags PortFlags: u32 {
[INFO] [stdout] 25 | |         /// if PortIsInput is set, then the port can receive data.
[INFO] [stdout] 26 | |         const PORT_IS_INPUT = jack_sys::JackPortIsInput,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     }
[INFO] [stdout] 57 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/types.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     bitflags! {
[INFO] [stdout] 24 | |     pub flags PortFlags: u32 {
[INFO] [stdout] 25 | |         /// if PortIsInput is set, then the port can receive data.
[INFO] [stdout] 26 | |         const PORT_IS_INPUT = jack_sys::JackPortIsInput,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     }
[INFO] [stdout] 57 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:72:5
[INFO] [stdout]     |
[INFO] [stdout] 72  | /     bitflags! {
[INFO] [stdout] 73  | |     pub flags Status: u32 {
[INFO] [stdout] 74  | |         /// overall operation failed
[INFO] [stdout] 75  | |         const FAILURE = jack_sys::JackFailure,
[INFO] [stdout] ...   |
[INFO] [stdout] 117 | |     }
[INFO] [stdout] 118 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/types.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     bitflags! {
[INFO] [stdout] 24 | |     pub flags PortFlags: u32 {
[INFO] [stdout] 25 | |         /// if PortIsInput is set, then the port can receive data.
[INFO] [stdout] 26 | |         const PORT_IS_INPUT = jack_sys::JackPortIsInput,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     }
[INFO] [stdout] 57 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:72:5
[INFO] [stdout]     |
[INFO] [stdout] 72  | /     bitflags! {
[INFO] [stdout] 73  | |     pub flags Status: u32 {
[INFO] [stdout] 74  | |         /// overall operation failed
[INFO] [stdout] 75  | |         const FAILURE = jack_sys::JackFailure,
[INFO] [stdout] ...   |
[INFO] [stdout] 117 | |     }
[INFO] [stdout] 118 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | /     bitflags! {
[INFO] [stdout] 127 | |     pub flags Options: u32 {
[INFO] [stdout] 128 | |         /// Null value to use when no option bits are needed.
[INFO] [stdout] 129 | |         const NULL_OPTIONS = jack_sys::JackNullOption,
[INFO] [stdout] ...   |
[INFO] [stdout] 148 | |     }
[INFO] [stdout] 149 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | /     bitflags! {
[INFO] [stdout] 127 | |     pub flags Options: u32 {
[INFO] [stdout] 128 | |         /// Null value to use when no option bits are needed.
[INFO] [stdout] 129 | |         const NULL_OPTIONS = jack_sys::JackNullOption,
[INFO] [stdout] ...   |
[INFO] [stdout] 148 | |     }
[INFO] [stdout] 149 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:72:5
[INFO] [stdout]     |
[INFO] [stdout] 72  | /     bitflags! {
[INFO] [stdout] 73  | |     pub flags Status: u32 {
[INFO] [stdout] 74  | |         /// overall operation failed
[INFO] [stdout] 75  | |         const FAILURE = jack_sys::JackFailure,
[INFO] [stdout] ...   |
[INFO] [stdout] 117 | |     }
[INFO] [stdout] 118 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:72:5
[INFO] [stdout]     |
[INFO] [stdout] 72  | /     bitflags! {
[INFO] [stdout] 73  | |     pub flags Status: u32 {
[INFO] [stdout] 74  | |         /// overall operation failed
[INFO] [stdout] 75  | |         const FAILURE = jack_sys::JackFailure,
[INFO] [stdout] ...   |
[INFO] [stdout] 117 | |     }
[INFO] [stdout] 118 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | /     bitflags! {
[INFO] [stdout] 127 | |     pub flags Options: u32 {
[INFO] [stdout] 128 | |         /// Null value to use when no option bits are needed.
[INFO] [stdout] 129 | |         const NULL_OPTIONS = jack_sys::JackNullOption,
[INFO] [stdout] ...   |
[INFO] [stdout] 148 | |     }
[INFO] [stdout] 149 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/types.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | /     bitflags! {
[INFO] [stdout] 127 | |     pub flags Options: u32 {
[INFO] [stdout] 128 | |         /// Null value to use when no option bits are needed.
[INFO] [stdout] 129 | |         const NULL_OPTIONS = jack_sys::JackNullOption,
[INFO] [stdout] ...   |
[INFO] [stdout] 148 | |     }
[INFO] [stdout] 149 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/midi.rs:37:36
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut jstruct = mem::uninitialized();
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/client.rs:19:34
[INFO] [stdout]    |
[INFO] [stdout] 19 |     process_handler:  Option<Box<ProcessHandler + 'a>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |     process_handler:  Option<Box<dyn ProcessHandler + 'a>>,
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/client.rs:20:34
[INFO] [stdout]    |
[INFO] [stdout] 20 |     metadata_handler: Option<Box<MetadataHandler + 'a>>
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     metadata_handler: Option<Box<dyn MetadataHandler + 'a>>
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/midi.rs:37:36
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut jstruct = mem::uninitialized();
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/client.rs:19:34
[INFO] [stdout]    |
[INFO] [stdout] 19 |     process_handler:  Option<Box<ProcessHandler + 'a>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |     process_handler:  Option<Box<dyn ProcessHandler + 'a>>,
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/client.rs:20:34
[INFO] [stdout]    |
[INFO] [stdout] 20 |     metadata_handler: Option<Box<MetadataHandler + 'a>>
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     metadata_handler: Option<Box<dyn MetadataHandler + 'a>>
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:229:46
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 CString::new(port1).unwrap().as_ptr(),
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout]     = note: `#[warn(temporary_cstring_as_ptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:230:46
[INFO] [stdout]     |
[INFO] [stdout] 230 |                 CString::new(port2).unwrap().as_ptr())
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:250:46
[INFO] [stdout]     |
[INFO] [stdout] 250 |                 CString::new(port1).unwrap().as_ptr(),
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:251:46
[INFO] [stdout]     |
[INFO] [stdout] 251 |                 CString::new(port2).unwrap().as_ptr())
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `Struct__jack_midi_event` does not permit being left uninitialized
[INFO] [stdout]   --> src/midi.rs:37:31
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut jstruct = mem::uninitialized();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               this code causes undefined behavior when executed
[INFO] [stdout]    |                               help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:229:46
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 CString::new(port1).unwrap().as_ptr(),
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout]     = note: `#[warn(temporary_cstring_as_ptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:230:46
[INFO] [stdout]     |
[INFO] [stdout] 230 |                 CString::new(port2).unwrap().as_ptr())
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:250:46
[INFO] [stdout]     |
[INFO] [stdout] 250 |                 CString::new(port1).unwrap().as_ptr(),
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]    --> src/client.rs:251:46
[INFO] [stdout]     |
[INFO] [stdout] 251 |                 CString::new(port2).unwrap().as_ptr())
[INFO] [stdout]     |                 ---------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]     |
[INFO] [stdout]     = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]     = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `Struct__jack_midi_event` does not permit being left uninitialized
[INFO] [stdout]   --> src/midi.rs:37:31
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut jstruct = mem::uninitialized();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               this code causes undefined behavior when executed
[INFO] [stdout]    |                               help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/midi_sine.rs:17:46
[INFO] [stdout]    |
[INFO] [stdout] 17 | static RUNNING: atomic::AtomicBool = atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 17 | static RUNNING: atomic::AtomicBool = atomic::AtomicBool::new(false);
[INFO] [stdout]    |                                              ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/thru.rs:10:46
[INFO] [stdout]    |
[INFO] [stdout] 10 | static RUNNING: atomic::AtomicBool = atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 10 | static RUNNING: atomic::AtomicBool = atomic::AtomicBool::new(false);
[INFO] [stdout]    |                                              ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/simple_client.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 23 | static RUNNING: atomic::AtomicBool = atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]    |
[INFO] [stdout] 23 | static RUNNING: atomic::AtomicBool = atomic::AtomicBool::new(false);
[INFO] [stdout]    |                                              ~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> examples/connect.rs:177:26
[INFO] [stdout]     |
[INFO] [stdout] 177 |         Err(f) => panic!(f.to_string())
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 177 |         Err(f) => panic!("{}", f.to_string())
[INFO] [stdout]     |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e9e5704897fa071b4dca2dad98c678edf5b5b2b71d7eed203f0745c2c927c0cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9e5704897fa071b4dca2dad98c678edf5b5b2b71d7eed203f0745c2c927c0cb", kill_on_drop: false }`
[INFO] [stdout] e9e5704897fa071b4dca2dad98c678edf5b5b2b71d7eed203f0745c2c927c0cb
