[INFO] fetching crate lukkid 0.1.0...
[INFO] testing lukkid-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate lukkid 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate lukkid 0.1.0 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 lukkid 0.1.0
[INFO] finished tweaking crates.io crate lukkid 0.1.0
[INFO] tweaked toml for crates.io crate lukkid 0.1.0 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b98c816b71809195770eecd5b95c94ab3d9d8f5fbe308f2dfd39aa2f103381eb
[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" "b98c816b71809195770eecd5b95c94ab3d9d8f5fbe308f2dfd39aa2f103381eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b98c816b71809195770eecd5b95c94ab3d9d8f5fbe308f2dfd39aa2f103381eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b98c816b71809195770eecd5b95c94ab3d9d8f5fbe308f2dfd39aa2f103381eb", kill_on_drop: false }`
[INFO] [stdout] b98c816b71809195770eecd5b95c94ab3d9d8f5fbe308f2dfd39aa2f103381eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca0b645e1c073c37450a9c1e2b88f2fadc970b6f0f22d81b6f7f964a93454df4
[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" "ca0b645e1c073c37450a9c1e2b88f2fadc970b6f0f22d81b6f7f964a93454df4", kill_on_drop: false }`
[INFO] [stderr]    Compiling lukkid v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `curr`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     curr: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `step`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     step: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stop`
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     stop: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "ca0b645e1c073c37450a9c1e2b88f2fadc970b6f0f22d81b6f7f964a93454df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca0b645e1c073c37450a9c1e2b88f2fadc970b6f0f22d81b6f7f964a93454df4", kill_on_drop: false }`
[INFO] [stdout] ca0b645e1c073c37450a9c1e2b88f2fadc970b6f0f22d81b6f7f964a93454df4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] 4333134439a09b09d9292b7984a8e15f8a2e36b51fc4df07441abd61b4690a8b
[INFO] running `Command { std: "docker" "start" "-a" "4333134439a09b09d9292b7984a8e15f8a2e36b51fc4df07441abd61b4690a8b", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `curr`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     curr: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lukkid v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `step`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     step: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stop`
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     stop: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `curr`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     curr: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `step`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     step: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stop`
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     stop: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "4333134439a09b09d9292b7984a8e15f8a2e36b51fc4df07441abd61b4690a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4333134439a09b09d9292b7984a8e15f8a2e36b51fc4df07441abd61b4690a8b", kill_on_drop: false }`
[INFO] [stdout] 4333134439a09b09d9292b7984a8e15f8a2e36b51fc4df07441abd61b4690a8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 2a1eaacf7cbd06748c645f568f8ce5b59f1a30cb9b9716c820e7c403f9eebcaf
[INFO] running `Command { std: "docker" "start" "-a" "2a1eaacf7cbd06748c645f568f8ce5b59f1a30cb9b9716c820e7c403f9eebcaf", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `curr`
[INFO] [stderr]   --> src/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     curr: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `step`
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     step: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stop`
[INFO] [stderr]   --> src/lib.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     stop: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `curr`
[INFO] [stderr]   --> src/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     curr: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `step`
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     step: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stop`
[INFO] [stderr]   --> src/lib.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     stop: T,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lukkid-4171eaa3eec0ad71
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lukkid
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - zigma (line 101) ... FAILED
[INFO] [stdout] test src/lib.rs - Anukrom<T> (line 33) ... FAILED
[INFO] [stdout] test src/lib.rs - Sequence<T> (line 64) ... FAILED
[INFO] [stdout] test src/lib.rs - zigma (line 110) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - zigma (line 101) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `zigma` in this scope
[INFO] [stdout]  --> src/lib.rs:102:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | let sl = zigma(Sequence::new(2,10,2), 0);
[INFO] [stdout]   |          ^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lukkid::zigma;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Sequence`
[INFO] [stdout]  --> src/lib.rs:102:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | let sl = zigma(Sequence::new(2,10,2), 0);
[INFO] [stdout]   |                ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lukkid::Sequence;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Anukrom<T> (line 33) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Anukrom`
[INFO] [stdout]  --> src/lib.rs:35:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | for n in Anukrom::new(2,10,2){
[INFO] [stdout]   |          ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lukkid::Anukrom;
[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 - Sequence<T> (line 64) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Sequence`
[INFO] [stdout]  --> src/lib.rs:66:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | for n in Sequence::new(2,10,2){
[INFO] [stdout]   |          ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lukkid::Sequence;
[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 - zigma (line 110) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Sequence`
[INFO] [stdout]  --> src/lib.rs:111:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | let fl = Sequence::new(2, 10, 2).fold(0,|acc,x|acc+x);
[INFO] [stdout]   |          ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lukkid::Sequence;
[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] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Anukrom<T> (line 33)
[INFO] [stdout]     src/lib.rs - Sequence<T> (line 64)
[INFO] [stdout]     src/lib.rs - zigma (line 101)
[INFO] [stdout]     src/lib.rs - zigma (line 110)
[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" "2a1eaacf7cbd06748c645f568f8ce5b59f1a30cb9b9716c820e7c403f9eebcaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a1eaacf7cbd06748c645f568f8ce5b59f1a30cb9b9716c820e7c403f9eebcaf", kill_on_drop: false }`
[INFO] [stdout] 2a1eaacf7cbd06748c645f568f8ce5b59f1a30cb9b9716c820e7c403f9eebcaf