[INFO] fetching crate frunk_laws 0.4.2...
[INFO] testing frunk_laws-0.4.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate frunk_laws 0.4.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate frunk_laws 0.4.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frunk_laws 0.4.2
[INFO] finished tweaking crates.io crate frunk_laws 0.4.2
[INFO] tweaked toml for crates.io crate frunk_laws 0.4.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded frunk_derives v0.4.2
[INFO] [stderr]   Downloaded frunk_proc_macro_helpers v0.1.2
[INFO] [stderr]   Downloaded frunk v0.4.2
[INFO] [stderr]   Downloaded quickcheck v0.6.2
[INFO] [stderr]   Downloaded frunk_core v0.4.2
[INFO] [stderr]   Downloaded env_logger v0.5.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bf55e41cab8fd00f1b14614468d4735d96ac7f65611c166ba6fb61db54aa72f
[INFO] running `Command { std: "docker" "start" "-a" "8bf55e41cab8fd00f1b14614468d4735d96ac7f65611c166ba6fb61db54aa72f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bf55e41cab8fd00f1b14614468d4735d96ac7f65611c166ba6fb61db54aa72f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf55e41cab8fd00f1b14614468d4735d96ac7f65611c166ba6fb61db54aa72f", kill_on_drop: false }`
[INFO] [stdout] 8bf55e41cab8fd00f1b14614468d4735d96ac7f65611c166ba6fb61db54aa72f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e801ce9255584bba92701c9353b1cb55296461a4a5fc1d2fbeeda56aa94674b
[INFO] running `Command { std: "docker" "start" "-a" "7e801ce9255584bba92701c9353b1cb55296461a4a5fc1d2fbeeda56aa94674b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling frunk_core v0.4.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.1.2
[INFO] [stderr]    Compiling frunk_derives v0.4.2
[INFO] [stderr]    Compiling frunk v0.4.2
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling frunk_laws v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.43s
[INFO] running `Command { std: "docker" "inspect" "7e801ce9255584bba92701c9353b1cb55296461a4a5fc1d2fbeeda56aa94674b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e801ce9255584bba92701c9353b1cb55296461a4a5fc1d2fbeeda56aa94674b", kill_on_drop: false }`
[INFO] [stdout] 7e801ce9255584bba92701c9353b1cb55296461a4a5fc1d2fbeeda56aa94674b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9d50b8fef942d196e50a3f896f7423d2d37fb613d6ffc7048890af4e9b54ae9
[INFO] running `Command { std: "docker" "start" "-a" "b9d50b8fef942d196e50a3f896f7423d2d37fb613d6ffc7048890af4e9b54ae9", kill_on_drop: false }`
[INFO] [stderr]    Compiling frunk_laws v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "b9d50b8fef942d196e50a3f896f7423d2d37fb613d6ffc7048890af4e9b54ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9d50b8fef942d196e50a3f896f7423d2d37fb613d6ffc7048890af4e9b54ae9", kill_on_drop: false }`
[INFO] [stdout] b9d50b8fef942d196e50a3f896f7423d2d37fb613d6ffc7048890af4e9b54ae9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6df984e48a6afd8507dde74b8065ae8521f480b0db396dd4a48a31d15e34c065
[INFO] running `Command { std: "docker" "start" "-a" "6df984e48a6afd8507dde74b8065ae8521f480b0db396dd4a48a31d15e34c065", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/frunk_laws-4da556f646fed182)
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test monoid_laws::tests::i32_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::i16_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::any_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::all_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::i8_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::i64_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::isize_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_u16_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_i32_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_i16_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_i64_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_i8_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_isize_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::u16_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_u8_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_usize_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_u32_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::u8_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::u32_id_prop ... ok
[INFO] [stdout] test monoid_laws::tests::product_u64_id_prop ... ok
[INFO] [stdout] test semigroup_laws::tests::any_prop ... ok
[INFO] [stdout] test semigroup_laws::tests::all_prop ... ok
[INFO] [stdout] test monoid_laws::tests::usize_id_prop ... ok
[INFO] [stdout] test semigroup_laws::tests::max_prop ... ok
[INFO] [stdout] test monoid_laws::tests::u64_id_prop ... ok
[INFO] [stdout] test semigroup_laws::tests::min_prop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests frunk_laws
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/monoid_laws.rs - monoid_laws::left_identity (line 28) ... FAILED
[INFO] [stdout] test src/semigroup_laws.rs - semigroup_laws::associativity (line 25) ... FAILED
[INFO] [stdout] test src/monoid_laws.rs - monoid_laws::right_identity (line 48) ... FAILED
[INFO] [stdout] test src/monoid_laws.rs - monoid_laws (line 8) ... FAILED
[INFO] [stdout] test src/semigroup_laws.rs - semigroup_laws (line 5) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/monoid_laws.rs - monoid_laws::left_identity (line 28) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `String: Monoid` is not satisfied
[INFO] [stdout]   --> src/monoid_laws.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | quickcheck(left_identity as fn(String) -> bool);
[INFO] [stdout]    |            ^^^^^^^^^^^^^ the trait `Monoid` is not implemented for `String`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Monoid`:
[INFO] [stdout]              isize
[INFO] [stdout]              i8
[INFO] [stdout]              i16
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              usize
[INFO] [stdout]              u8
[INFO] [stdout]              u16
[INFO] [stdout]            and 61 others
[INFO] [stdout] note: required by a bound in `frunk_laws::monoid_laws::left_identity`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/monoid_laws.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn left_identity<A: Monoid + Eq>(a: A) -> bool {
[INFO] [stdout]    |                         ^^^^^^ required by this bound in `left_identity`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/semigroup_laws.rs - semigroup_laws::associativity (line 25) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `Vec<i8>: Semigroup` is not satisfied
[INFO] [stdout]   --> src/semigroup_laws.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | quickcheck(associativity as fn(Vec<i8>, Vec<i8>, Vec<i8>) -> bool)
[INFO] [stdout]    |            ^^^^^^^^^^^^^ the trait `Semigroup` is not implemented for `Vec<i8>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Semigroup`:
[INFO] [stdout]              isize
[INFO] [stdout]              i8
[INFO] [stdout]              i16
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              usize
[INFO] [stdout]              u8
[INFO] [stdout]              u16
[INFO] [stdout]            and 67 others
[INFO] [stdout] note: required by a bound in `frunk_laws::semigroup_laws::associativity`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/semigroup_laws.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn associativity<A: Semigroup + Eq>(a: A, b: A, c: A) -> bool {
[INFO] [stdout]    |                         ^^^^^^^^^ required by this bound in `associativity`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/monoid_laws.rs - monoid_laws::right_identity (line 48) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `String: Monoid` is not satisfied
[INFO] [stdout]   --> src/monoid_laws.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | quickcheck(right_identity as fn(String) -> bool);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ the trait `Monoid` is not implemented for `String`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Monoid`:
[INFO] [stdout]              isize
[INFO] [stdout]              i8
[INFO] [stdout]              i16
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              usize
[INFO] [stdout]              u8
[INFO] [stdout]              u16
[INFO] [stdout]            and 61 others
[INFO] [stdout] note: required by a bound in `frunk_laws::monoid_laws::right_identity`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/monoid_laws.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn right_identity<A: Monoid + Eq>(a: A) -> bool {
[INFO] [stdout]    |                          ^^^^^^ required by this bound in `right_identity`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/monoid_laws.rs - monoid_laws (line 8) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `String: Monoid` is not satisfied
[INFO] [stdout]   --> src/monoid_laws.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | quickcheck(left_identity as fn(String) -> bool);
[INFO] [stdout]    |            ^^^^^^^^^^^^^ the trait `Monoid` is not implemented for `String`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Monoid`:
[INFO] [stdout]              isize
[INFO] [stdout]              i8
[INFO] [stdout]              i16
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              usize
[INFO] [stdout]              u8
[INFO] [stdout]              u16
[INFO] [stdout]            and 61 others
[INFO] [stdout] note: required by a bound in `frunk_laws::monoid_laws::left_identity`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/monoid_laws.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn left_identity<A: Monoid + Eq>(a: A) -> bool {
[INFO] [stdout]    |                         ^^^^^^ required by this bound in `left_identity`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `String: Monoid` is not satisfied
[INFO] [stdout]   --> src/monoid_laws.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | quickcheck(right_identity as fn(String) -> bool);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ the trait `Monoid` is not implemented for `String`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Monoid`:
[INFO] [stdout]              isize
[INFO] [stdout]              i8
[INFO] [stdout]              i16
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              usize
[INFO] [stdout]              u8
[INFO] [stdout]              u16
[INFO] [stdout]            and 61 others
[INFO] [stdout] note: required by a bound in `frunk_laws::monoid_laws::right_identity`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/monoid_laws.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn right_identity<A: Monoid + Eq>(a: A) -> bool {
[INFO] [stdout]    |                          ^^^^^^ required by this bound in `right_identity`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/semigroup_laws.rs - semigroup_laws (line 5) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `Vec<i8>: Semigroup` is not satisfied
[INFO] [stdout]   --> src/semigroup_laws.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | quickcheck(associativity as fn(Vec<i8>, Vec<i8>, Vec<i8>) -> bool)
[INFO] [stdout]    |            ^^^^^^^^^^^^^ the trait `Semigroup` is not implemented for `Vec<i8>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `Semigroup`:
[INFO] [stdout]              isize
[INFO] [stdout]              i8
[INFO] [stdout]              i16
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              usize
[INFO] [stdout]              u8
[INFO] [stdout]              u16
[INFO] [stdout]            and 67 others
[INFO] [stdout] note: required by a bound in `frunk_laws::semigroup_laws::associativity`
[INFO] [stdout]   --> /opt/rustwide/workdir/src/semigroup_laws.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn associativity<A: Semigroup + Eq>(a: A, b: A, c: A) -> bool {
[INFO] [stdout]    |                         ^^^^^^^^^ required by this bound in `associativity`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/monoid_laws.rs - monoid_laws (line 8)
[INFO] [stdout]     src/monoid_laws.rs - monoid_laws::left_identity (line 28)
[INFO] [stdout]     src/monoid_laws.rs - monoid_laws::right_identity (line 48)
[INFO] [stdout]     src/semigroup_laws.rs - semigroup_laws (line 5)
[INFO] [stdout]     src/semigroup_laws.rs - semigroup_laws::associativity (line 25)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 5 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "6df984e48a6afd8507dde74b8065ae8521f480b0db396dd4a48a31d15e34c065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6df984e48a6afd8507dde74b8065ae8521f480b0db396dd4a48a31d15e34c065", kill_on_drop: false }`
[INFO] [stdout] 6df984e48a6afd8507dde74b8065ae8521f480b0db396dd4a48a31d15e34c065
