[INFO] cloning repository https://github.com/bartsmykla/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bartsmykla/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartsmykla%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartsmykla%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2641c2191be0ef671f1326ba3ccdd1c861bb9054
[INFO] testing bartsmykla/rust_learning against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartsmykla%2Frust_learning" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bartsmykla/rust_learning on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bartsmykla/rust_learning
[INFO] finished tweaking git repo https://github.com/bartsmykla/rust_learning
[INFO] tweaked toml for git repo https://github.com/bartsmykla/rust_learning written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/bartsmykla/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 5a66e514287b5cd010115fb0e10d576c7bd9461d196ad85d098545535e3d512c
[INFO] running `Command { std: "docker" "start" "-a" "5a66e514287b5cd010115fb0e10d576c7bd9461d196ad85d098545535e3d512c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a66e514287b5cd010115fb0e10d576c7bd9461d196ad85d098545535e3d512c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a66e514287b5cd010115fb0e10d576c7bd9461d196ad85d098545535e3d512c", kill_on_drop: false }`
[INFO] [stdout] 5a66e514287b5cd010115fb0e10d576c7bd9461d196ad85d098545535e3d512c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e9c1cdf2f29a0a41ec1c8fb6599d3618d30447cd41c03e35c5c1a01a02bf7b5a
[INFO] running `Command { std: "docker" "start" "-a" "e9c1cdf2f29a0a41ec1c8fb6599d3618d30447cd41c03e35c5c1a01a02bf7b5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/advanced_features.rs:226:57
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let _obj = Box::new(Ball { diameter: &num }) as Box<Red>;
[INFO] [stdout]     |                                                         ^^^ help: use `dyn`: `dyn Red`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:186:32
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:214:32
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:235:34
[INFO] [stdout]     |
[INFO] [stdout] 235 | fn print_section(name: &str, f: &Fn()) {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/functions.rs:274:27
[INFO] [stdout]     |
[INFO] [stdout] 274 |     fn create_fn() -> Box<Fn()> {
[INFO] [stdout]     |                           ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/functions.rs:280:30
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn create_fnmut() -> Box<FnMut()> {
[INFO] [stdout]     |                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/sections/traits.rs:281:55
[INFO] [stdout]     |
[INFO] [stdout] 281 |                 println!("> Foo.add(Bar) was called");;
[INFO] [stdout]     |                                                       ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helpers.rs:33:39
[INFO] [stdout]    |
[INFO] [stdout] 33 |     subsections: HashMap<&'a str, Box<Fn()>>,
[INFO] [stdout]    |                                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/sections/error_handling.rs:210:53
[INFO] [stdout]     |
[INFO] [stdout] 210 |             MyCustomWrappedError::Parse(ref e) => e.description(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.47s
[INFO] running `Command { std: "docker" "inspect" "e9c1cdf2f29a0a41ec1c8fb6599d3618d30447cd41c03e35c5c1a01a02bf7b5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c1cdf2f29a0a41ec1c8fb6599d3618d30447cd41c03e35c5c1a01a02bf7b5a", kill_on_drop: false }`
[INFO] [stdout] e9c1cdf2f29a0a41ec1c8fb6599d3618d30447cd41c03e35c5c1a01a02bf7b5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 521ffb56f44551f4c5d25b0f973d3db4e2f9e04a55d0b228600b63533ac71f25
[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" "521ffb56f44551f4c5d25b0f973d3db4e2f9e04a55d0b228600b63533ac71f25", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/advanced_features.rs:226:57
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let _obj = Box::new(Ball { diameter: &num }) as Box<Red>;
[INFO] [stdout]     |                                                         ^^^ help: use `dyn`: `dyn Red`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:186:32
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:214:32
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:235:34
[INFO] [stdout]     |
[INFO] [stdout] 235 | fn print_section(name: &str, f: &Fn()) {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/functions.rs:274:27
[INFO] [stdout]     |
[INFO] [stdout] 274 |     fn create_fn() -> Box<Fn()> {
[INFO] [stdout]     |                           ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/functions.rs:280:30
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn create_fnmut() -> Box<FnMut()> {
[INFO] [stdout]     |                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/sections/traits.rs:281:55
[INFO] [stdout]     |
[INFO] [stdout] 281 |                 println!("> Foo.add(Bar) was called");;
[INFO] [stdout]     |                                                       ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helpers.rs:33:39
[INFO] [stdout]    |
[INFO] [stdout] 33 |     subsections: HashMap<&'a str, Box<Fn()>>,
[INFO] [stdout]    |                                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/sections/error_handling.rs:210:53
[INFO] [stdout]     |
[INFO] [stdout] 210 |             MyCustomWrappedError::Parse(ref e) => e.description(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/advanced_features.rs:226:57
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let _obj = Box::new(Ball { diameter: &num }) as Box<Red>;
[INFO] [stdout]     |                                                         ^^^ help: use `dyn`: `dyn Red`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:186:32
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:214:32
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/error_handling.rs:235:34
[INFO] [stdout]     |
[INFO] [stdout] 235 | fn print_section(name: &str, f: &Fn()) {
[INFO] [stdout]     |                                  ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/functions.rs:274:27
[INFO] [stdout]     |
[INFO] [stdout] 274 |     fn create_fn() -> Box<Fn()> {
[INFO] [stdout]     |                           ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sections/functions.rs:280:30
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn create_fnmut() -> Box<FnMut()> {
[INFO] [stdout]     |                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/sections/traits.rs:281:55
[INFO] [stdout]     |
[INFO] [stdout] 281 |                 println!("> Foo.add(Bar) was called");;
[INFO] [stdout]     |                                                       ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helpers.rs:33:39
[INFO] [stdout]    |
[INFO] [stdout] 33 |     subsections: HashMap<&'a str, Box<Fn()>>,
[INFO] [stdout]    |                                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/sections/error_handling.rs:210:53
[INFO] [stdout]     |
[INFO] [stdout] 210 |             MyCustomWrappedError::Parse(ref e) => e.description(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "521ffb56f44551f4c5d25b0f973d3db4e2f9e04a55d0b228600b63533ac71f25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "521ffb56f44551f4c5d25b0f973d3db4e2f9e04a55d0b228600b63533ac71f25", kill_on_drop: false }`
[INFO] [stdout] 521ffb56f44551f4c5d25b0f973d3db4e2f9e04a55d0b228600b63533ac71f25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36834e04eee5a48f207697ec769c56abe46ed102458052c6026589886c21134b
[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" "36834e04eee5a48f207697ec769c56abe46ed102458052c6026589886c21134b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/sections/advanced_features.rs:226:57
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 226 |     let _obj = Box::new(Ball { diameter: &num }) as Box<Red>;
[INFO] [stdout] 
[INFO] [stderr]     |                                                         ^^^ help: use `dyn`: `dyn Red`
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 0 tests
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] 
[INFO] [stderr]    --> src/sections/error_handling.rs:186:32
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/error_handling.rs:214:32
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/error_handling.rs:235:34
[INFO] [stderr]     |
[INFO] [stderr] 235 | fn print_section(name: &str, f: &Fn()) {
[INFO] [stderr]     |                                  ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/functions.rs:274:27
[INFO] [stderr]     |
[INFO] [stderr] 274 |     fn create_fn() -> Box<Fn()> {
[INFO] [stderr]     |                           ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/functions.rs:280:30
[INFO] [stderr]     |
[INFO] [stderr] 280 |     fn create_fnmut() -> Box<FnMut()> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/sections/traits.rs:281:55
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 println!("> Foo.add(Bar) was called");;
[INFO] [stderr]     |                                                       ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/helpers.rs:33:39
[INFO] [stderr]    |
[INFO] [stderr] 33 |     subsections: HashMap<&'a str, Box<Fn()>>,
[INFO] [stderr]    |                                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/sections/error_handling.rs:210:53
[INFO] [stderr]     |
[INFO] [stderr] 210 |             MyCustomWrappedError::Parse(ref e) => e.description(),
[INFO] [stderr]     |                                                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/advanced_features.rs:226:57
[INFO] [stderr]     |
[INFO] [stderr] 226 |     let _obj = Box::new(Ball { diameter: &num }) as Box<Red>;
[INFO] [stderr]     |                                                         ^^^ help: use `dyn`: `dyn Red`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/error_handling.rs:186:32
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/error_handling.rs:214:32
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/error_handling.rs:235:34
[INFO] [stderr]     |
[INFO] [stderr] 235 | fn print_section(name: &str, f: &Fn()) {
[INFO] [stderr]     |                                  ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/functions.rs:274:27
[INFO] [stderr]     |
[INFO] [stderr] 274 |     fn create_fn() -> Box<Fn()> {
[INFO] [stderr]     |                           ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sections/functions.rs:280:30
[INFO] [stderr]     |
[INFO] [stderr] 280 |     fn create_fnmut() -> Box<FnMut()> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn FnMut()`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/sections/traits.rs:281:55
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 println!("> Foo.add(Bar) was called");;
[INFO] [stderr]     |                                                       ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/helpers.rs:33:39
[INFO] [stderr]    |
[INFO] [stderr] 33 |     subsections: HashMap<&'a str, Box<Fn()>>,
[INFO] [stderr]    |                                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/sections/error_handling.rs:210:53
[INFO] [stderr]     |
[INFO] [stderr] 210 |             MyCustomWrappedError::Parse(ref e) => e.description(),
[INFO] [stderr]     |                                                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learning-3442cc23d261bb8f
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/main-49f2104815ebd5de
[INFO] [stderr]    Doc-tests learning
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> /opt/rustwide/workdir/src/sections/traits.rs:281:55
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 println!("> Foo.add(Bar) was called");;
[INFO] [stderr]     |                                                       ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36834e04eee5a48f207697ec769c56abe46ed102458052c6026589886c21134b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36834e04eee5a48f207697ec769c56abe46ed102458052c6026589886c21134b", kill_on_drop: false }`
[INFO] [stdout] 36834e04eee5a48f207697ec769c56abe46ed102458052c6026589886c21134b