[INFO] cloning repository https://github.com/hujewelz/rust_by_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hujewelz/rust_by_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhujewelz%2Frust_by_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhujewelz%2Frust_by_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1bdc070fd576e0d2d53a9168194b92c04bdb5381
[INFO] testing hujewelz/rust_by_example against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhujewelz%2Frust_by_example" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hujewelz/rust_by_example on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hujewelz/rust_by_example
[INFO] finished tweaking git repo https://github.com/hujewelz/rust_by_example
[INFO] tweaked toml for git repo https://github.com/hujewelz/rust_by_example written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/hujewelz/rust_by_example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee105be6a2f651b38c43ccfa3afff7268979e89a78ff71548600352764b03d6e
[INFO] running `Command { std: "docker" "start" "-a" "ee105be6a2f651b38c43ccfa3afff7268979e89a78ff71548600352764b03d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee105be6a2f651b38c43ccfa3afff7268979e89a78ff71548600352764b03d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee105be6a2f651b38c43ccfa3afff7268979e89a78ff71548600352764b03d6e", kill_on_drop: false }`
[INFO] [stdout] ee105be6a2f651b38c43ccfa3afff7268979e89a78ff71548600352764b03d6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 964427a6981b3fe82e887c4b2df86e7eb05aa249c75a5476dfe05e02a5fee4df
[INFO] running `Command { std: "docker" "start" "-a" "964427a6981b3fe82e887c4b2df86e7eb05aa249c75a5476dfe05e02a5fee4df", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_file2`
[INFO] [stdout]   --> src/error_handling.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn read_file2() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `last_char_of_first_line`
[INFO] [stdout]   --> src/error_handling.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn last_char_of_first_line(text: &str) -> Option<char> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "964427a6981b3fe82e887c4b2df86e7eb05aa249c75a5476dfe05e02a5fee4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "964427a6981b3fe82e887c4b2df86e7eb05aa249c75a5476dfe05e02a5fee4df", kill_on_drop: false }`
[INFO] [stdout] 964427a6981b3fe82e887c4b2df86e7eb05aa249c75a5476dfe05e02a5fee4df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74f4d6989753b23a9970f0d40d8f8773eb23c02e1f69c29d5cef7dee20cd1788
[INFO] running `Command { std: "docker" "start" "-a" "74f4d6989753b23a9970f0d40d8f8773eb23c02e1f69c29d5cef7dee20cd1788", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_file2`
[INFO] [stdout]   --> src/error_handling.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn read_file2() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `last_char_of_first_line`
[INFO] [stdout]   --> src/error_handling.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn last_char_of_first_line(text: &str) -> Option<char> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_file2`
[INFO] [stdout]   --> src/error_handling.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn read_file2() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `last_char_of_first_line`
[INFO] [stdout]   --> src/error_handling.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn last_char_of_first_line(text: &str) -> Option<char> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_by_example-49cc3e57493953fb)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_by_example-0eb13345c782b89c)
[INFO] running `Command { std: "docker" "inspect" "74f4d6989753b23a9970f0d40d8f8773eb23c02e1f69c29d5cef7dee20cd1788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f4d6989753b23a9970f0d40d8f8773eb23c02e1f69c29d5cef7dee20cd1788", kill_on_drop: false }`
[INFO] [stdout] 74f4d6989753b23a9970f0d40d8f8773eb23c02e1f69c29d5cef7dee20cd1788
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 33298ffdc91cd3ba53cb0f346a80b3759a757f9c5613eaed025aaea5c719b421
[INFO] running `Command { std: "docker" "start" "-a" "33298ffdc91cd3ba53cb0f346a80b3759a757f9c5613eaed025aaea5c719b421", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `read_file2`
[INFO] [stderr]   --> src/error_handling.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn read_file2() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `last_char_of_first_line`
[INFO] [stderr]   --> src/error_handling.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn last_char_of_first_line(text: &str) -> Option<char> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_by_example` (lib) generated 2 warnings
[INFO] [stderr] warning: `rust_by_example` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_by_example-49cc3e57493953fb)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test cus_types::tests::area_of_rectangle ... ok
[INFO] [stdout] test cus_types::tests::is_square ... ok
[INFO] [stdout] test cus_types::tests::empty_list ... ok
[INFO] [stdout] test cus_types::tests::height_of_rectangle ... ok
[INFO] [stdout] test cus_types::tests::list_elements ... ok
[INFO] [stdout] test cus_types::tests::list_len ... ok
[INFO] [stdout] test cus_types::tests::list_with_an_value ... ok
[INFO] [stdout] test cus_types::tests::width_of_rectangle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_by_example-0eb13345c782b89c)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_by_example
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/cus_types.rs - cus_types::Number (line 148) ... FAILED
[INFO] [stdout] test src/cus_types.rs - cus_types::Pair (line 66) ... FAILED
[INFO] [stdout] test src/cus_types.rs - cus_types::Unit (line 51) ... FAILED
[INFO] [stdout] test src/cus_types.rs - cus_types::Pair (line 61) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/cus_types.rs - cus_types::Number (line 148) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Number`
[INFO] [stdout]  --> src/cus_types.rs:149:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | println!("zero is {}", Number::Zero as i32);
[INFO] [stdout]   |                        ^^^^^^ use of undeclared type `Number`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/cus_types.rs - cus_types::Pair (line 66) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `pair` in this scope
[INFO] [stdout]  --> src/cus_types.rs:67:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | let Pair(interger, decimal) = pair;
[INFO] [stdout]   |                               ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0531]: cannot find tuple struct or tuple variant `Pair` in this scope
[INFO] [stdout]  --> src/cus_types.rs:67:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | let Pair(interger, decimal) = pair;
[INFO] [stdout]   |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0531.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/cus_types.rs - cus_types::Unit (line 51) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `Unit` in this scope
[INFO] [stdout]  --> src/cus_types.rs:52:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | let _unit = Unit;
[INFO] [stdout]   |             ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this unit struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rust_by_example::cus_types::Unit;
[INFO] [stdout]   |
[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/cus_types.rs - cus_types::Pair (line 61) stdout ----
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Pair` in this scope
[INFO] [stdout]  --> src/cus_types.rs:62:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | let pair = Pair(1, 0.1);
[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] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/cus_types.rs - cus_types::Number (line 148)
[INFO] [stdout]     src/cus_types.rs - cus_types::Pair (line 61)
[INFO] [stdout]     src/cus_types.rs - cus_types::Pair (line 66)
[INFO] [stdout]     src/cus_types.rs - cus_types::Unit (line 51)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "33298ffdc91cd3ba53cb0f346a80b3759a757f9c5613eaed025aaea5c719b421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33298ffdc91cd3ba53cb0f346a80b3759a757f9c5613eaed025aaea5c719b421", kill_on_drop: false }`
[INFO] [stdout] 33298ffdc91cd3ba53cb0f346a80b3759a757f9c5613eaed025aaea5c719b421