[INFO] fetching crate AT42QT2120 0.1.2...
[INFO] testing AT42QT2120-0.1.2 against 1.47.0 for beta-1.48-1
[INFO] extracting crate AT42QT2120 0.1.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate AT42QT2120 0.1.2 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate AT42QT2120 0.1.2
[INFO] finished tweaking crates.io crate AT42QT2120 0.1.2
[INFO] tweaked toml for crates.io crate AT42QT2120 0.1.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b04dc1c7a66e8b40ca458d1055a92b960f2d17d87b786574f2a63e0eb8d5441f
[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" "b04dc1c7a66e8b40ca458d1055a92b960f2d17d87b786574f2a63e0eb8d5441f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b04dc1c7a66e8b40ca458d1055a92b960f2d17d87b786574f2a63e0eb8d5441f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b04dc1c7a66e8b40ca458d1055a92b960f2d17d87b786574f2a63e0eb8d5441f", kill_on_drop: false }`
[INFO] [stdout] b04dc1c7a66e8b40ca458d1055a92b960f2d17d87b786574f2a63e0eb8d5441f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39e3450d72e1990125953fa2665d4622f5ec8992c8f12a4349494b13ab321a4a
[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" "39e3450d72e1990125953fa2665d4622f5ec8992c8f12a4349494b13ab321a4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling AT42QT2120 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `AT42QT2120` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `at42_qt2120`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "39e3450d72e1990125953fa2665d4622f5ec8992c8f12a4349494b13ab321a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39e3450d72e1990125953fa2665d4622f5ec8992c8f12a4349494b13ab321a4a", kill_on_drop: false }`
[INFO] [stdout] 39e3450d72e1990125953fa2665d4622f5ec8992c8f12a4349494b13ab321a4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca1b633a7cef32c4e3d5161a6b230fc2f9b7fbda9abbf6b2a15c25d47e495eae
[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" "ca1b633a7cef32c4e3d5161a6b230fc2f9b7fbda9abbf6b2a15c25d47e495eae", kill_on_drop: false }`
[INFO] [stdout] warning: crate `AT42QT2120` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `at42_qt2120`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling AT42QT2120 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `AT42QT2120` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `at42_qt2120`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "ca1b633a7cef32c4e3d5161a6b230fc2f9b7fbda9abbf6b2a15c25d47e495eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca1b633a7cef32c4e3d5161a6b230fc2f9b7fbda9abbf6b2a15c25d47e495eae", kill_on_drop: false }`
[INFO] [stdout] ca1b633a7cef32c4e3d5161a6b230fc2f9b7fbda9abbf6b2a15c25d47e495eae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3a8891acae17fc794f3ecdb26aead29f7169763a5706fd4f6f953fd8826fc8aa
[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" "3a8891acae17fc794f3ecdb26aead29f7169763a5706fd4f6f953fd8826fc8aa", kill_on_drop: false }`
[INFO] [stderr] warning: crate `AT42QT2120` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `at42_qt2120`
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: crate `AT42QT2120` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `at42_qt2120`
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/AT42QT2120-fc7d77f8014bc3fa
[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] [stderr]    Doc-tests AT42QT2120
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 12) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 18) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 54) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 27) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 34) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 43) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 12) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `stm32f1xx_hal`
[INFO] [stdout]  --> src/lib.rs:12:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate stm32f1xx_hal as hal;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 18) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BlockingI2c`
[INFO] [stdout]  --> src/lib.rs:19:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | let i2c2 = BlockingI2c::i2c2(..);
[INFO] [stdout]   |            ^^^^^^^^^^^ use of undeclared type or module `BlockingI2c`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `At42qt2120`
[INFO] [stdout]  --> src/lib.rs:20:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | let mut touch_sensor = At42qt2120::new(i2c2);
[INFO] [stdout]   |                        ^^^^^^^^^^ use of undeclared type or module `At42qt2120`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 54) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `touch_sensor` in this scope
[INFO] [stdout]  --> src/lib.rs:56:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | touch_sensor.read_key(key_to_read)?;
[INFO] [stdout]   | ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/lib.rs:56:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | / fn main() {
[INFO] [stdout] 3 | | let key_to_read = 3;
[INFO] [stdout] 4 | | touch_sensor.read_key(key_to_read)?;
[INFO] [stdout]   | | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   | | |
[INFO] [stdout]   | | cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 5 | | }
[INFO] [stdout]   | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 27) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `touch_sensor` in this scope
[INFO] [stdout]  --> src/lib.rs:30:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | touch_sensor.setup_slider(use_wheel, enable_slider);
[INFO] [stdout]   | ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 34) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `setup_key` in this scope
[INFO] [stdout]  --> src/lib.rs:38:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | setup_key(key_to_setup, key_threshold, enable_key);
[INFO] [stdout]   | ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 43) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `touch_sensor` in this scope
[INFO] [stdout]  --> src/lib.rs:44:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | if touch_sensor.keys_pressed()? {
[INFO] [stdout]   |    ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `touch_sensor` in this scope
[INFO] [stdout]  --> src/lib.rs:45:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let keys_pressed = touch_sensor.read_keys()?;
[INFO] [stdout]   |                      ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `touch_sensor` in this scope
[INFO] [stdout]  --> src/lib.rs:48:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | if touch_sensor.slider_pressed()? {
[INFO] [stdout]   |    ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `touch_sensor` in this scope
[INFO] [stdout]  --> src/lib.rs:49:22
[INFO] [stdout]   |
[INFO] [stdout] 8 |   let keys_pressed = touch_sensor.read_slider()?;
[INFO] [stdout]   |                      ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 2  | / fn main() {
[INFO] [stdout] 3  | | if touch_sensor.keys_pressed()? {
[INFO] [stdout]    | |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 4  | |   let keys_pressed = touch_sensor.read_keys()?;
[INFO] [stdout] 5  | | }
[INFO] [stdout] ...  |
[INFO] [stdout] 9  | | }
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 2  | / fn main() {
[INFO] [stdout] 3  | | if touch_sensor.keys_pressed()? {
[INFO] [stdout] 4  | |   let keys_pressed = touch_sensor.read_keys()?;
[INFO] [stdout]    | |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 5  | | }
[INFO] [stdout] ...  |
[INFO] [stdout] 9  | | }
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 2  | / fn main() {
[INFO] [stdout] 3  | | if touch_sensor.keys_pressed()? {
[INFO] [stdout] 4  | |   let keys_pressed = touch_sensor.read_keys()?;
[INFO] [stdout] 5  | | }
[INFO] [stdout] 6  | |
[INFO] [stdout] 7  | | if touch_sensor.slider_pressed()? {
[INFO] [stdout]    | |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 8  | |   let keys_pressed = touch_sensor.read_slider()?;
[INFO] [stdout] 9  | | }
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:49:22
[INFO] [stdout]    |
[INFO] [stdout] 2  | / fn main() {
[INFO] [stdout] 3  | | if touch_sensor.keys_pressed()? {
[INFO] [stdout] 4  | |   let keys_pressed = touch_sensor.read_keys()?;
[INFO] [stdout] 5  | | }
[INFO] [stdout] ...  |
[INFO] [stdout] 8  | |   let keys_pressed = touch_sensor.read_slider()?;
[INFO] [stdout]    | |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 9  | | }
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 12)
[INFO] [stdout]     src/lib.rs - (line 18)
[INFO] [stdout]     src/lib.rs - (line 27)
[INFO] [stdout]     src/lib.rs - (line 34)
[INFO] [stdout]     src/lib.rs - (line 43)
[INFO] [stdout]     src/lib.rs - (line 54)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "3a8891acae17fc794f3ecdb26aead29f7169763a5706fd4f6f953fd8826fc8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a8891acae17fc794f3ecdb26aead29f7169763a5706fd4f6f953fd8826fc8aa", kill_on_drop: false }`
[INFO] [stdout] 3a8891acae17fc794f3ecdb26aead29f7169763a5706fd4f6f953fd8826fc8aa
