[INFO] cloning repository https://github.com/chenmeng1996/rdemo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chenmeng1996/rdemo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15b574d454a9c9bcb83d9fe9e3bae2034701cbe7
[INFO] checking chenmeng1996/rdemo/15b574d454a9c9bcb83d9fe9e3bae2034701cbe7 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] finished tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] tweaked toml for git repo https://github.com/chenmeng1996/rdemo written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/chenmeng1996/rdemo 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking chenmeng1996/rdemo/15b574d454a9c9bcb83d9fe9e3bae2034701cbe7 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] finished tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] tweaked toml for git repo https://github.com/chenmeng1996/rdemo written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chenmeng1996/rdemo 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking chenmeng1996/rdemo/15b574d454a9c9bcb83d9fe9e3bae2034701cbe7 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] finished tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] tweaked toml for git repo https://github.com/chenmeng1996/rdemo written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chenmeng1996/rdemo 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--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
[ERROR] error running command: no output for 300 seconds
[INFO] checking chenmeng1996/rdemo/15b574d454a9c9bcb83d9fe9e3bae2034701cbe7 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenmeng1996%2Frdemo" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chenmeng1996/rdemo on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] finished tweaking git repo https://github.com/chenmeng1996/rdemo
[INFO] tweaked toml for git repo https://github.com/chenmeng1996/rdemo written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chenmeng1996/rdemo 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mail-builder v0.2.2
[INFO] [stderr]   Downloaded serde_yaml v0.8.26
[INFO] [stderr]   Downloaded abnf-core v0.5.0
[INFO] [stderr]   Downloaded gethostname v0.2.3
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.46
[INFO] [stderr]   Downloaded yaml-rust v0.4.5
[INFO] [stderr]   Downloaded abnf v0.12.0
[INFO] [stderr]   Downloaded iana-time-zone v0.1.50
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] [stderr]   Downloaded nom v7.1.0
[INFO] [stderr]   Downloaded serde_json v1.0.94
[INFO] [stderr]   Downloaded syn v1.0.101
[INFO] [stderr]   Downloaded libc v0.2.134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38bdede6147a8e6c742c9413e62e0470cfeff9aa480391c055c521467257e4cf
[INFO] running `Command { std: "docker" "start" "-a" "38bdede6147a8e6c742c9413e62e0470cfeff9aa480391c055c521467257e4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38bdede6147a8e6c742c9413e62e0470cfeff9aa480391c055c521467257e4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38bdede6147a8e6c742c9413e62e0470cfeff9aa480391c055c521467257e4cf", kill_on_drop: false }`
[INFO] [stdout] 38bdede6147a8e6c742c9413e62e0470cfeff9aa480391c055c521467257e4cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8025aac9612dcf485a5775e73d169ce138aafe7ef4372ac597cbb092f9843918
[INFO] running `Command { std: "docker" "start" "-a" "8025aac9612dcf485a5775e73d169ce138aafe7ef4372ac597cbb092f9843918", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]     Checking rdemo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking iana-time-zone v0.1.50
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:71:28
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:71:38
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:73:40
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:75:37
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:79:38
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:83:56
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:83:62
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enumeration_test.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/enumeration_test.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/generics_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> src/generics_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 6 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[INFO] [stdout]   --> src/generics_test.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Point2<T, U> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mixup` is never used
[INFO] [stdout]   --> src/generics_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T, U> Point2<T, U> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 21 |     fn mixup<V, W>(self, other: Point2<V, W>) -> Point2<T, W> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `count` is never used
[INFO] [stdout]   --> src/trait_test.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub trait Count {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] 45 |     fn count(&self) -> u32;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/trait_test.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn notify<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify1` is never used
[INFO] [stdout]   --> src/trait_test.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn notify1(item: impl Summary) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify2` is never used
[INFO] [stdout]   --> src/trait_test.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify3` is never used
[INFO] [stdout]   --> src/trait_test.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify4` is never used
[INFO] [stdout]   --> src/trait_test.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify5` is never used
[INFO] [stdout]   --> src/trait_test.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify6` is never used
[INFO] [stdout]   --> src/trait_test.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `some_function` is never used
[INFO] [stdout]   --> src/trait_test.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `some_function1` is never used
[INFO] [stdout]   --> src/trait_test.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]   --> src/trait_test.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/trait_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]  --> src/lifetime_test.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]   --> src/lifetime_test.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/owner_scope_test.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut a = String::from("a");
[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: `s1`
[INFO] [stdout]    --> src/owner_scope_test.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let s1 = &mut s;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_test.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s = String::new();
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_test.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut s = "hello world".to_string();
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_test.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut s = String::from("hello world");
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_test.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s = String::new();
[INFO] [stdout]   |             ----^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_test.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut s = "hello world".to_string();
[INFO] [stdout]   |             ----^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_test.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut s = String::from("hello world");
[INFO] [stdout]   |             ----^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/string_test.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let s3 = s1 + &s2;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/struct_test.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let user2 = build_user(String::from("a"), String::from("b"));
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/struct_test.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let user2 = User {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/struct_test.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut user1 = User {
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/struct_test.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let black = Color(0, 0, 0);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `origin`
[INFO] [stdout]   --> src/struct_test.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let origin = Point(0, 0, 0);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data_test.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut x = 1;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enumeration_test.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let four = IpAddrKind::V4;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enumeration_test.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let six = IpAddrKind::V6;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enumeration_test.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let home = IpAddr::V4(127,0,0,0);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enumeration_test.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let home = IpAddr::V6(String::from("::1"));
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/enumeration_test.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let a = Some(5);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/enumeration_test.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let b = Some("he");
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/enumeration_test.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let c: Option<i32> = None;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enumeration_test.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let six = plus_one(five);
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/enumeration_test.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let none = plus_one(None);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]  --> src/vector_test.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let v2 = vec![1, 2, 3];
[INFO] [stdout]   |             ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/vector_test.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 _ => {}
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let f = match f {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let f = match f {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let f = File::open("hello.txt").unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/err_handle_test.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:71:28
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:71:38
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:73:40
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/trait_test.rs:75:37
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:79:38
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item1`
[INFO] [stdout]   --> src/trait_test.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:83:56
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:83:62
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/trait_test.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/trait_test.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lifetime_test.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let i = ImportantExcerpt { part: first_sentence };
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.46/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_string` is never used
[INFO] [stdout]  --> src/string_test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn create_string() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `username`, `sign_in_count`, and `active` are never read
[INFO] [stdout]  --> src/struct_test.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct User {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 4 |         username: String,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 5 |         email: String,
[INFO] [stdout] 6 |         sign_in_count: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 7 |         active: bool,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/struct_test.rs:48:18
[INFO] [stdout]    |
[INFO] [stdout] 48 |     struct Color(i32, i32, i32);
[INFO] [stdout]    |            ----- ^^^  ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 48 |     struct Color((), (), ());
[INFO] [stdout]    |                  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/struct_test.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |     struct Point(i32, i32, i32);
[INFO] [stdout]    |            ----- ^^^  ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 49 |     struct Point((), (), ());
[INFO] [stdout]    |                  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enumeration_test.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/enumeration_test.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 21 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_enum` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn create_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enum_method` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn enum_method() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_test` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn option_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     enum Coin {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |     enum UsState {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/enumeration_test.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_match` is never used
[INFO] [stdout]    --> src/enumeration_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn one_match() {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_let` is never used
[INFO] [stdout]    --> src/enumeration_test.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn if_let() {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_vector` is never used
[INFO] [stdout]  --> src/vector_test.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fn create_vector() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_vector` is never used
[INFO] [stdout]   --> src/vector_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn read_vector() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert_hashmap` is never used
[INFO] [stdout]   --> src/hashmap_test.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn insert_hashmap() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unwrap_test` is never used
[INFO] [stdout]   --> src/err_handle_test.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn unwrap_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expect_test` is never used
[INFO] [stdout]   --> src/err_handle_test.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn expect_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_result` is never used
[INFO] [stdout]   --> src/err_handle_test.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn return_result() -> Result<String, io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_result_2` is never used
[INFO] [stdout]   --> src/err_handle_test.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn return_result_2() -> Result<String, io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_result_3` is never used
[INFO] [stdout]   --> src/err_handle_test.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn return_result_3() -> Result<String, io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]  --> src/generics_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 2 |     x: T,
[INFO] [stdout] 3 |     y: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/generics_test.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_i32` is never used
[INFO] [stdout]   --> src/generics_test.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn largest_i32(list: &[i32]) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]   --> src/generics_test.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/trait_test.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn notify<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify1` is never used
[INFO] [stdout]   --> src/trait_test.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn notify1(item: impl Summary) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify2` is never used
[INFO] [stdout]   --> src/trait_test.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn notify2<T: Summary>(item1: T, item2: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify3` is never used
[INFO] [stdout]   --> src/trait_test.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn notify3<T: Summary, E: Summary>(item1: T, item2: E) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify4` is never used
[INFO] [stdout]   --> src/trait_test.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn notify4(item1: impl Summary, item2: impl Summary) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify5` is never used
[INFO] [stdout]   --> src/trait_test.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify5<T: Summary + Display>(item1: T) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify6` is never used
[INFO] [stdout]   --> src/trait_test.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn notify6(item1: impl Summary + Display) {}
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `some_function` is never used
[INFO] [stdout]   --> src/trait_test.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `some_function1` is never used
[INFO] [stdout]   --> src/trait_test.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn some_function1<T, U>(t: T, u: U)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]   --> src/trait_test.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/trait_test.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/trait_test.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 111 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/trait_test.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 121 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]   --> src/lifetime_test.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 14 |     part: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/lifetime_test.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 18 |     // 
[INFO] [stdout] 19 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 86 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8025aac9612dcf485a5775e73d169ce138aafe7ef4372ac597cbb092f9843918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8025aac9612dcf485a5775e73d169ce138aafe7ef4372ac597cbb092f9843918", kill_on_drop: false }`
[INFO] [stdout] 8025aac9612dcf485a5775e73d169ce138aafe7ef4372ac597cbb092f9843918
