[INFO] fetching crate throttled_json_rpc 0.0.6...
[INFO] checking throttled_json_rpc-0.0.6 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate throttled_json_rpc 0.0.6 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate throttled_json_rpc 0.0.6 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate throttled_json_rpc 0.0.6
[INFO] finished tweaking crates.io crate throttled_json_rpc 0.0.6
[INFO] tweaked toml for crates.io crate throttled_json_rpc 0.0.6 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 6b85157ef71c49ec735165f236dc68edba2967dbcb56177d7eb95ca41706b858
[INFO] running `Command { std: "docker" "start" "-a" "6b85157ef71c49ec735165f236dc68edba2967dbcb56177d7eb95ca41706b858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b85157ef71c49ec735165f236dc68edba2967dbcb56177d7eb95ca41706b858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b85157ef71c49ec735165f236dc68edba2967dbcb56177d7eb95ca41706b858", kill_on_drop: false }`
[INFO] [stdout] 6b85157ef71c49ec735165f236dc68edba2967dbcb56177d7eb95ca41706b858
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1888f24b7f5b1cacad2c6c504688bbce0041c9c17505a217ae801770d37ec84d
[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" "1888f24b7f5b1cacad2c6c504688bbce0041c9c17505a217ae801770d37ec84d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking throttled_json_rpc v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stdout] warning: type alias is never used: `Stuff`
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Stuff = String;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking encoding_rs v0.8.24
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking backtrace v0.3.51
[INFO] [stderr]     Checking flate2 v1.0.18
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stdout] warning: variant is never constructed: `A`
[INFO] [stdout]   --> src/macros.rs:98:27
[INFO] [stdout]    |
[INFO] [stdout] 98 |                           $($title($return_ty_b),)+
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9  | |         single:
[INFO] [stdout] 10 | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11 | |         enum:
[INFO] [stdout] 12 | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13 | |     });
[INFO] [stdout]    | |_______- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]   --> src/macros.rs:98:27
[INFO] [stdout]    |
[INFO] [stdout] 98 |                           $($title($return_ty_b),)+
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9  | |         single:
[INFO] [stdout] 10 | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11 | |         enum:
[INFO] [stdout] 12 | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13 | |     });
[INFO] [stdout]    | |_______- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `A`
[INFO] [stdout]    --> src/macros.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 |   ...                   pub fn $title(self) -> Result<$return_ty_b, Error> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `B`
[INFO] [stdout]    --> src/macros.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 |   ...                   pub fn $title(self) -> Result<$return_ty_b, Error> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_batch_size`
[INFO] [stdout]    --> src/macros.rs:228:13
[INFO] [stdout]     |
[INFO] [stdout] 228 |               max_batch_size: usize,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/macros.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |   ...   pub fn new(uri: String, user: Option<String>, pass: Option<String>, max_concurrency: usize, rps: usize, max_batch_size: usize) -> Arc<Self...
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `batcher`
[INFO] [stdout]    --> src/macros.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |               pub fn batcher<'a, T: for<'de> Deserialize<'de>>(&'a self) -> BatcherPair<'a, T> {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call_method`
[INFO] [stdout]    --> src/macros.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |               fn call_method<T: Serialize>(&self, method: &'static str, params: T) -> Result<String, Error> {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `a`
[INFO] [stdout]    --> src/macros.rs:306:21
[INFO] [stdout]     |
[INFO] [stdout] 306 |                       pub fn $method_a(&self$(, $arg_name_a: $arg_ty_a)*) -> Result<$return_ty_a, Error> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `b`
[INFO] [stdout]    --> src/macros.rs:318:21
[INFO] [stdout]     |
[INFO] [stdout] 318 |                       pub fn $method_b(&self$(, $arg_name_b: $arg_ty_b)*) -> Result<reply::$method_b, Error> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | /     jsonrpc_client!(pub struct RpcClient {
[INFO] [stdout] 9   | |         single:
[INFO] [stdout] 10  | |             pub fn a(&self, i: usize) -> Result<u64>;
[INFO] [stdout] 11  | |         enum:
[INFO] [stdout] 12  | |             pub fn b(&self) -> Result<A(Stuff)|B(Vec<String>)>;
[INFO] [stdout] 13  | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "1888f24b7f5b1cacad2c6c504688bbce0041c9c17505a217ae801770d37ec84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1888f24b7f5b1cacad2c6c504688bbce0041c9c17505a217ae801770d37ec84d", kill_on_drop: false }`
[INFO] [stdout] 1888f24b7f5b1cacad2c6c504688bbce0041c9c17505a217ae801770d37ec84d