[INFO] fetching crate better-rs 0.1.7...
[INFO] testing better-rs-0.1.7 against 1.49.0 for beta-1.50-1
[INFO] extracting crate better-rs 0.1.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate better-rs 0.1.7 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 crates.io crate better-rs 0.1.7
[INFO] finished tweaking crates.io crate better-rs 0.1.7
[INFO] tweaked toml for crates.io crate better-rs 0.1.7 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2da44cbd24da7347cb42409c4d458d54b10a34fa0d9579daa760c4cc0ad2aa4
[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" "d2da44cbd24da7347cb42409c4d458d54b10a34fa0d9579daa760c4cc0ad2aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2da44cbd24da7347cb42409c4d458d54b10a34fa0d9579daa760c4cc0ad2aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2da44cbd24da7347cb42409c4d458d54b10a34fa0d9579daa760c4cc0ad2aa4", kill_on_drop: false }`
[INFO] [stdout] d2da44cbd24da7347cb42409c4d458d54b10a34fa0d9579daa760c4cc0ad2aa4
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5074d67418ed24d66cd38b2ebec01bbf888b25993255acfa1ba0bbe846373e96
[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" "5074d67418ed24d66cd38b2ebec01bbf888b25993255acfa1ba0bbe846373e96", kill_on_drop: false }`
[INFO] [stderr]    Compiling better-rs v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "5074d67418ed24d66cd38b2ebec01bbf888b25993255acfa1ba0bbe846373e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5074d67418ed24d66cd38b2ebec01bbf888b25993255acfa1ba0bbe846373e96", kill_on_drop: false }`
[INFO] [stdout] 5074d67418ed24d66cd38b2ebec01bbf888b25993255acfa1ba0bbe846373e96
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 410d72a7c441f3b6a8ee3ec63f2ebd77cf7951b42c0065a2d8e5424bcad99651
[INFO] running `Command { std: "docker" "start" "-a" "410d72a7c441f3b6a8ee3ec63f2ebd77cf7951b42c0065a2d8e5424bcad99651", kill_on_drop: false }`
[INFO] [stderr]    Compiling better-rs v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "410d72a7c441f3b6a8ee3ec63f2ebd77cf7951b42c0065a2d8e5424bcad99651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410d72a7c441f3b6a8ee3ec63f2ebd77cf7951b42c0065a2d8e5424bcad99651", kill_on_drop: false }`
[INFO] [stdout] 410d72a7c441f3b6a8ee3ec63f2ebd77cf7951b42c0065a2d8e5424bcad99651
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 272173367eb3b30b704e760199b285acd158c6954eea1bbc77f71444e47dc658
[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" "272173367eb3b30b704e760199b285acd158c6954eea1bbc77f71444e47dc658", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/better_rs-50a7b8fcb0ec351e
[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 better-rs
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/math/sets.rs - math::sets::prepend (line 5) ... FAILED
[INFO] [stdout] test src/math/sets.rs - math::sets::get_tail (line 50) ... FAILED
[INFO] [stdout] test src/math/sets.rs - math::sets::permutate (line 18) ... FAILED
[INFO] [stdout] test src/fp/iter.rs - fp::iter::map (line 6) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/math/sets.rs - math::sets::prepend (line 5) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `prepend` in this scope
[INFO] [stdout]  --> src/math/sets.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | assert_eq!(prepend(1, vec![2,3]), vec![1,2,3]);
[INFO] [stdout]   |            ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use better_rs::math::sets::prepend;
[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/math/sets.rs - math::sets::get_tail (line 50) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `get_tail` in this scope
[INFO] [stdout]  --> src/math/sets.rs:51:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | assert_eq!(get_tail(vec![1,2,3]), vec![2,3]);
[INFO] [stdout]   |            ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use better_rs::math::sets::get_tail;
[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/math/sets.rs - math::sets::permutate (line 18) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `permutate` in this scope
[INFO] [stdout]  --> src/math/sets.rs:19:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | println!("{:?}", permutate(&vec![1,2,3]));
[INFO] [stdout]   |                  ^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use better_rs::math::sets::permutate;
[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/fp/iter.rs - fp::iter::map (line 6) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `map` in this scope
[INFO] [stdout]  --> src/fp/iter.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | assert_eq!(map(f, v), vec![2,4,6]);
[INFO] [stdout]   |            ^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use better_rs::fp::iter::map;
[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] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/fp/iter.rs - fp::iter::map (line 6)
[INFO] [stdout]     src/math/sets.rs - math::sets::get_tail (line 50)
[INFO] [stdout]     src/math/sets.rs - math::sets::permutate (line 18)
[INFO] [stdout]     src/math/sets.rs - math::sets::prepend (line 5)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 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" "272173367eb3b30b704e760199b285acd158c6954eea1bbc77f71444e47dc658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "272173367eb3b30b704e760199b285acd158c6954eea1bbc77f71444e47dc658", kill_on_drop: false }`
[INFO] [stdout] 272173367eb3b30b704e760199b285acd158c6954eea1bbc77f71444e47dc658