[INFO] updating cached repository https://github.com/statianzo/imposters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 344a5027ba57464a424c1906376445b6e208cb57
[INFO] testing statianzo/imposters against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstatianzo%2Fimposters" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/statianzo/imposters on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/statianzo/imposters
[INFO] finished tweaking git repo https://github.com/statianzo/imposters
[INFO] tweaked toml for git repo https://github.com/statianzo/imposters written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/statianzo/imposters already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6347a23e59954e314dd0e61db660a49893d237d3a977d96649b1f8e5f702aad
[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" "d6347a23e59954e314dd0e61db660a49893d237d3a977d96649b1f8e5f702aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6347a23e59954e314dd0e61db660a49893d237d3a977d96649b1f8e5f702aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6347a23e59954e314dd0e61db660a49893d237d3a977d96649b1f8e5f702aad", kill_on_drop: false }`
[INFO] [stdout] d6347a23e59954e314dd0e61db660a49893d237d3a977d96649b1f8e5f702aad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75304029e613ce87ad652aa031ba82bf91f809a9403e7042ce1aca78f158d10a
[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" "75304029e613ce87ad652aa031ba82bf91f809a9403e7042ce1aca78f158d10a", kill_on_drop: false }`
[INFO] [stderr]    Compiling imposters v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "75304029e613ce87ad652aa031ba82bf91f809a9403e7042ce1aca78f158d10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75304029e613ce87ad652aa031ba82bf91f809a9403e7042ce1aca78f158d10a", kill_on_drop: false }`
[INFO] [stdout] 75304029e613ce87ad652aa031ba82bf91f809a9403e7042ce1aca78f158d10a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c53aaa43c5410a0c4b56dedb7a7dcf4f6ff43dcc982915ddaebb0760c7e1969
[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" "1c53aaa43c5410a0c4b56dedb7a7dcf4f6ff43dcc982915ddaebb0760c7e1969", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.1
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling rand v0.5.3
[INFO] [stderr]    Compiling aho-corasick v0.6.5
[INFO] [stderr]    Compiling env_logger v0.5.10
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling imposters v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> src/ch08_adv_algs/fib.rs:78:26
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut iter = a.into_iter();
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.48s
[INFO] running `Command { std: "docker" "inspect" "1c53aaa43c5410a0c4b56dedb7a7dcf4f6ff43dcc982915ddaebb0760c7e1969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c53aaa43c5410a0c4b56dedb7a7dcf4f6ff43dcc982915ddaebb0760c7e1969", kill_on_drop: false }`
[INFO] [stdout] 1c53aaa43c5410a0c4b56dedb7a7dcf4f6ff43dcc982915ddaebb0760c7e1969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 307e6f64032a991d788bbbc8880f5d030dc16c0045170f7417c41cd9ee087226
[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" "307e6f64032a991d788bbbc8880f5d030dc16c0045170f7417c41cd9ee087226", kill_on_drop: false }`
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/ch08_adv_algs/fib.rs:78:26
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let mut iter = a.into_iter();
[INFO] [stderr]    |                          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/imposters-08f242e29996f8ff
[INFO] [stdout] 
[INFO] [stdout] running 74 tests
[INFO] [stdout] test ch04_machinery::fsm::test_fsm ... ok
[INFO] [stdout] test ch06_datastructures::graph::test::test_it_works ... ok
[INFO] [stdout] test ch05_bigo::search::test::test_binary_hit ... ok
[INFO] [stdout] test ch06_datastructures::graph::test::test_weight_from ... ok
[INFO] [stdout] test ch06_datastructures::graph::test::test_add_edge ... ok
[INFO] [stdout] test ch06_datastructures::heap::test::test_iter ... ok
[INFO] [stdout] test ch05_bigo::search::test::test_brute_force_miss ... ok
[INFO] [stdout] test ch06_datastructures::linked::test::test_can_construct ... ok
[INFO] [stdout] test ch05_bigo::search::test::test_binary_miss ... ok
[INFO] [stdout] test ch06_datastructures::graph::test::test_weight_from_other ... ok
[INFO] [stdout] test ch06_datastructures::heap::test::test_from_iter ... ok
[INFO] [stdout] test ch06_datastructures::heap::test::test_new ... ok
[INFO] [stdout] test ch06_datastructures::heap::test::test_priority ... ok
[INFO] [stdout] test ch04_machinery::turing::test_build ... ok
[INFO] [stdout] test ch06_datastructures::linked_im::test::test_tail ... ok
[INFO] [stdout] test ch06_datastructures::linked_im::test::test_from_iter ... ok
[INFO] [stdout] test ch05_bigo::search::test::test_brute_force_hit ... ok
[INFO] [stdout] test ch06_datastructures::heap::test::test_push ... ok
[INFO] [stdout] test ch06_datastructures::linked_im::test::test_head ... ok
[INFO] [stdout] test ch06_datastructures::linked_im::test::test_append_str ... ok
[INFO] [stdout] test ch06_datastructures::heap::test::test_push_pop ... ok
[INFO] [stdout] test ch06_datastructures::linked::test::test_from_iter ... ok
[INFO] [stdout] test ch06_datastructures::queue::test::test_enq_after_deq ... ok
[INFO] [stdout] test ch06_datastructures::queue::test::test_deqeue ... ok
[INFO] [stdout] test ch06_datastructures::queue::test::test_enqueue_dequeue ... ok
[INFO] [stdout] test ch06_datastructures::linked::test::test_iterate ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_builtin_sort ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_heap_sort ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_insertion_sort ... ok
[INFO] [stdout] test ch06_datastructures::queue::test::test_new_queue ... ok
[INFO] [stdout] test ch06_datastructures::linked_im::test::test_append ... ok
[INFO] [stdout] test ch06_datastructures::queue::test::test_enqueue_len ... ok
[INFO] [stdout] test ch07_algorithms::bubble::test::test_small_sort ... ok
[INFO] [stdout] test ch07_algorithms::heap::test::test_dud ... ok
[INFO] [stdout] test ch07_algorithms::heap::test::test_small_sort ... ok
[INFO] [stdout] test ch07_algorithms::merge::test::test_small_sort ... ok
[INFO] [stdout] test ch07_algorithms::selection::test::test_small_sort ... ok
[INFO] [stdout] test ch05_bigo::vec_basic::bench_vec_access ... ok
[INFO] [stdout] test ch05_bigo::vec_basic::bench_vec_insert ... ok
[INFO] [stdout] test ch07_algorithms::insertion::test::test_small_sort ... ok
[INFO] [stdout] test ch07_algorithms::heap::test::test_any_sort ... ok
[INFO] [stdout] test ch08_adv_algs::fib::test::test_next ... ok
[INFO] [stdout] test ch08_adv_algs::fib::test::test_it ... ok
[INFO] [stdout] test ch09_compiler::lex::test::it_parses_anything_else ... ok
[INFO] [stdout] test ch08_adv_algs::fib::test::test_iterates ... ok
[INFO] [stdout] test ch08_adv_algs::fib::test::test_iterator ... ok
[INFO] [stdout] test ch08_adv_algs::fib::test::test_reset ... ok
[INFO] [stdout] test ch09_compiler::lex::test::it_parses_number ... ok
[INFO] [stdout] test ch07_algorithms::merge::test::test_any_sort ... ok
[INFO] [stdout] test ch09_compiler::lexer::test::test_it_parses_extern ... ok
[INFO] [stdout] test ch09_compiler::lexer::test::test_it_parses_identifier ... ok
[INFO] [stdout] test ch09_compiler::lexer::test::test_it_parses_multiple ... ok
[INFO] [stdout] test ch09_compiler::lexer::test::test_it_parses_number ... ok
[INFO] [stdout] test ch09_compiler::lexer::test::test_new ... ok
[INFO] [stdout] test ch10_patterns::adapter::test::test_it_works ... ok
[INFO] [stdout] test ch10_patterns::builder::test::test_it_builds ... ok
[INFO] [stdout] test ch10_patterns::factory::test::test_ctor ... ok
[INFO] [stdout] test ch10_patterns::factory::test::test_defaults ... ok
[INFO] [stdout] test ch08_adv_algs::bench::bench_fibonacci_nth ... ok
[INFO] [stdout] test ch09_compiler::lexer::test::test_it_parses_def ... ok
[INFO] [stdout] test ch07_algorithms::insertion::test::test_any_sort ... ok
[INFO] [stdout] test ch09_compiler::lex::test::it_parses_extern ... ok
[INFO] [stdout] test ch09_compiler::lex::test::it_parses_multiple ... ok
[INFO] [stdout] test ch09_compiler::lex::test::it_parses_def ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_builtin_unstable_sort ... ok
[INFO] [stdout] test ch05_bigo::vec_basic::bench_vec_push ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_merge_sort ... ok
[INFO] [stdout] test ch07_algorithms::selection::test::test_any_sort ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_bubble_sort ... ok
[INFO] [stdout] test ch07_algorithms::bubble::test::test_any_sort ... ok
[INFO] [stdout] test ch10_patterns::singleton::test::test_it_works ... ok
[INFO] [stdout] test ch07_algorithms::bench::bench_selection_sort ... ok
[INFO] [stdout] test ch05_bigo::search::test::bench_binary_search ... ok
[INFO] [stdout] test ch05_bigo::search::test::bench_brute_force ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 74 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests imposters
[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] running `Command { std: "docker" "inspect" "307e6f64032a991d788bbbc8880f5d030dc16c0045170f7417c41cd9ee087226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "307e6f64032a991d788bbbc8880f5d030dc16c0045170f7417c41cd9ee087226", kill_on_drop: false }`
[INFO] [stdout] 307e6f64032a991d788bbbc8880f5d030dc16c0045170f7417c41cd9ee087226