[INFO] fetching crate knarkzel 0.6.0...
[INFO] testing knarkzel-0.6.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate knarkzel 0.6.0 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate knarkzel 0.6.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate knarkzel 0.6.0
[INFO] finished tweaking crates.io crate knarkzel 0.6.0
[INFO] tweaked toml for crates.io crate knarkzel 0.6.0 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8725cfd1d2992550914d9af05e0a66a9e58def6ae92c6ae47e24d57b3ddfd862
[INFO] running `Command { std: "docker" "start" "-a" "8725cfd1d2992550914d9af05e0a66a9e58def6ae92c6ae47e24d57b3ddfd862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8725cfd1d2992550914d9af05e0a66a9e58def6ae92c6ae47e24d57b3ddfd862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8725cfd1d2992550914d9af05e0a66a9e58def6ae92c6ae47e24d57b3ddfd862", kill_on_drop: false }`
[INFO] [stdout] 8725cfd1d2992550914d9af05e0a66a9e58def6ae92c6ae47e24d57b3ddfd862
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a76fe80e9b61f010f4cdbec7e958cd40b4531f9ee38747419b7c6589aa13d7a6
[INFO] running `Command { std: "docker" "start" "-a" "a76fe80e9b61f010f4cdbec7e958cd40b4531f9ee38747419b7c6589aa13d7a6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling knarkzel v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.55s
[INFO] running `Command { std: "docker" "inspect" "a76fe80e9b61f010f4cdbec7e958cd40b4531f9ee38747419b7c6589aa13d7a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a76fe80e9b61f010f4cdbec7e958cd40b4531f9ee38747419b7c6589aa13d7a6", kill_on_drop: false }`
[INFO] [stdout] a76fe80e9b61f010f4cdbec7e958cd40b4531f9ee38747419b7c6589aa13d7a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52d14bdd9a9d6991459bcc966c4f14407e49deb31b59ffe0085d273ba0543629
[INFO] running `Command { std: "docker" "start" "-a" "52d14bdd9a9d6991459bcc966c4f14407e49deb31b59ffe0085d273ba0543629", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling knarkzel v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "52d14bdd9a9d6991459bcc966c4f14407e49deb31b59ffe0085d273ba0543629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d14bdd9a9d6991459bcc966c4f14407e49deb31b59ffe0085d273ba0543629", kill_on_drop: false }`
[INFO] [stdout] 52d14bdd9a9d6991459bcc966c4f14407e49deb31b59ffe0085d273ba0543629
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bb1993f800ddaf83206a734da7c0efb56a036d0a5a593e6aef95796004469172
[INFO] running `Command { std: "docker" "start" "-a" "bb1993f800ddaf83206a734da7c0efb56a036d0a5a593e6aef95796004469172", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/knarkzel-0a42d6fd17de1484)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests knarkzel
[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] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - prelude (line 96) ... FAILED
[INFO] [stdout] test src/lib.rs - prelude (line 108) ... FAILED
[INFO] [stdout] test src/lib.rs - prelude (line 76) ... FAILED
[INFO] [stdout] test src/lib.rs - prelude (line 83) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - prelude (line 96) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Random`
[INFO] [stdout]  --> src/lib.rs:97:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut random = Random::new().with_seed(1234);
[INFO] [stdout]   |                  ^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use knarkzel::prelude::Random;
[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 E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - prelude (line 108) stdout ----
[INFO] [stdout] error[E0599]: no method named `collect_vec` found for struct `Map` in the current scope
[INFO] [stdout]  --> src/lib.rs:113:6
[INFO] [stdout]   |
[INFO] [stdout] 7 |     .collect_vec();
[INFO] [stdout]   |      ^^^^^^^^^^^ method not found in `Map<std::slice::Iter<'_, {integer}>, [closure@src/lib.rs:6:10: 6:19]>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - prelude (line 76) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `slurp` in this scope
[INFO] [stdout]  --> src/lib.rs:77:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | let columns = slurp("mock.csv")?;
[INFO] [stdout]   |               ^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use knarkzel::slurp;
[INFO] [stdout]   |
[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 `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:77:32
[INFO] [stdout]     |
[INFO] [stdout] 2   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_76_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 3   | | let columns = slurp("mock.csv")?;
[INFO] [stdout]     | |                                ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 4   | | } _doctest_main_src_lib_rs_76_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[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 - prelude (line 83) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Regex`
[INFO] [stdout]  --> src/lib.rs:85:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | let regex = Regex::new(r"'([^']+)'\s+\((\d{4})\)")?;
[INFO] [stdout]   |             ^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 2 | use knarkzel::prelude::Regex;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::Regex;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::bytes::Regex;
[INFO] [stdout]   |
[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 `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:85:51
[INFO] [stdout]     |
[INFO] [stdout] 2   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_83_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 3   | | let text = "Not my favorite movie: 'Citizen Kane' (1941).";
[INFO] [stdout] 4   | | let regex = Regex::new(r"'([^']+)'\s+\((\d{4})\)")?;
[INFO] [stdout]     | |                                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 5   | | let captures = regex.captures(text)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | assert_eq!(&captures[2], "1941");
[INFO] [stdout] 10  | | } _doctest_main_src_lib_rs_83_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[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 `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:86:36
[INFO] [stdout]     |
[INFO] [stdout] 2   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_83_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 3   | | let text = "Not my favorite movie: 'Citizen Kane' (1941).";
[INFO] [stdout] 4   | | let regex = Regex::new(r"'([^']+)'\s+\((\d{4})\)")?;
[INFO] [stdout] 5   | | let captures = regex.captures(text)?;
[INFO] [stdout]     | |                                    ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | assert_eq!(&captures[2], "1941");
[INFO] [stdout] 10  | | } _doctest_main_src_lib_rs_83_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[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 - prelude (line 108)
[INFO] [stdout]     src/lib.rs - prelude (line 76)
[INFO] [stdout]     src/lib.rs - prelude (line 83)
[INFO] [stdout]     src/lib.rs - prelude (line 96)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "bb1993f800ddaf83206a734da7c0efb56a036d0a5a593e6aef95796004469172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb1993f800ddaf83206a734da7c0efb56a036d0a5a593e6aef95796004469172", kill_on_drop: false }`
[INFO] [stdout] bb1993f800ddaf83206a734da7c0efb56a036d0a5a593e6aef95796004469172
