[INFO] fetching crate wybr 0.0.2...
[INFO] testing wybr-0.0.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate wybr 0.0.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate wybr 0.0.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wybr 0.0.2
[INFO] finished tweaking crates.io crate wybr 0.0.2
[INFO] tweaked toml for crates.io crate wybr 0.0.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 184041659f54dca84c9c8b528dc6786603a275e64977aaa810f1cddc6e0c64ba
[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" "184041659f54dca84c9c8b528dc6786603a275e64977aaa810f1cddc6e0c64ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "184041659f54dca84c9c8b528dc6786603a275e64977aaa810f1cddc6e0c64ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "184041659f54dca84c9c8b528dc6786603a275e64977aaa810f1cddc6e0c64ba", kill_on_drop: false }`
[INFO] [stdout] 184041659f54dca84c9c8b528dc6786603a275e64977aaa810f1cddc6e0c64ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52f470b6ed2352c806584f0c4b6b7d9cae4bfba503985070c7d54f13073247a0
[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" "52f470b6ed2352c806584f0c4b6b7d9cae4bfba503985070c7d54f13073247a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling wybr v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream: &'a mut BufRead,
[INFO] [stdout]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stdout]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.28s
[INFO] running `Command { std: "docker" "inspect" "52f470b6ed2352c806584f0c4b6b7d9cae4bfba503985070c7d54f13073247a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f470b6ed2352c806584f0c4b6b7d9cae4bfba503985070c7d54f13073247a0", kill_on_drop: false }`
[INFO] [stdout] 52f470b6ed2352c806584f0c4b6b7d9cae4bfba503985070c7d54f13073247a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f90efa40b21fb88fdf2716de7fb49238f046c4c1e0c11f437af20e12531e1ec
[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" "8f90efa40b21fb88fdf2716de7fb49238f046c4c1e0c11f437af20e12531e1ec", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream: &'a mut BufRead,
[INFO] [stdout]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stdout]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wybr v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream: &'a mut BufRead,
[INFO] [stdout]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stdout]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.44s
[INFO] running `Command { std: "docker" "inspect" "8f90efa40b21fb88fdf2716de7fb49238f046c4c1e0c11f437af20e12531e1ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f90efa40b21fb88fdf2716de7fb49238f046c4c1e0c11f437af20e12531e1ec", kill_on_drop: false }`
[INFO] [stdout] 8f90efa40b21fb88fdf2716de7fb49238f046c4c1e0c11f437af20e12531e1ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d4196bb99c7d4c4a0c2b366da5a30aee93c2c77f7c1bc4c1bc43f4741d8c2a4
[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" "4d4196bb99c7d4c4a0c2b366da5a30aee93c2c77f7c1bc4c1bc43f4741d8c2a4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io/blt_reader.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 |     stream: &'a mut BufRead,
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io/blt_reader.rs:19:29
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stderr]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io/blt_reader.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 |     stream: &'a mut BufRead,
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io/blt_reader.rs:19:29
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stderr]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/wybr-aa73ac869b95745c
[INFO] [stdout] 
[INFO] [stdout] running 69 tests
[INFO] [stdout] test common::tests::election_error_msg ... ok
[INFO] [stdout] test io::blt_reader::tests::blt_cannot_parse ... ok
[INFO] [stdout] test methods::alternative::tests::alt_deeper ... ok
[INFO] [stdout] test methods::alternative::tests::alt_empty ... ok
[INFO] [stdout] test io::blt_reader::tests::blt_header ... ok
[INFO] [stdout] test methods::baldwin::tests::with_tie ... ok
[INFO] [stdout] test methods::borda::tests::borda_wiki ... ok
[INFO] [stdout] test methods::baldwin::tests::demo ... ok
[INFO] [stdout] test io::blt_reader::tests::blt_bad_cand ... ok
[INFO] [stdout] test io::blt_reader::tests::parse_sample_blt ... ok
[INFO] [stdout] test methods::borda::tests::borda_multi ... ok
[INFO] [stdout] test methods::borda::tests::borda_simple ... ok
[INFO] [stdout] test methods::meek::tests::meek_withdrawn ... ok
[INFO] [stdout] test methods::irv::tests::basic ... ok
[INFO] [stdout] test methods::borda::tests::borda_empty ... ok
[INFO] [stdout] test methods::alternative::tests::alt_basic ... ok
[INFO] [stdout] test methods::meek::tests::meek_alts ... ok
[INFO] [stdout] test methods::borda::tests::demo ... ok
[INFO] [stdout] test methods::meek::tests::meek_empty ... ok
[INFO] [stdout] test methods::irv::tests::empty ... ok
[INFO] [stdout] test methods::minimax::tests::no_cands ... ok
[INFO] [stdout] test methods::ranked_pairs::forced_dag::tests::basic ... ok
[INFO] [stdout] test methods::ranked_pairs::tests::ranked_pairs_basic ... ok
[INFO] [stdout] test methods::minimax::tests::minimax_basic ... ok
[INFO] [stdout] test methods::ranked_pairs::tests::ranked_pairs_co2 ... ok
[INFO] [stdout] test methods::ranked_pairs::tests::ranked_pairs_no_wins ... ok
[INFO] [stdout] test methods::nanson::tests::with_tie ... ok
[INFO] [stdout] test methods::ranked_pairs::tests::ranked_pairs_determinism ... ok
[INFO] [stdout] test methods::ranked_pairs::cand_pair::tests::cand_pair ... ok
[INFO] [stdout] test methods::schulze::tests::schulze_wiki ... ok
[INFO] [stdout] test methods::meek::tests::meek_alts_more ... ok
[INFO] [stdout] test methods::nanson::tests::empty ... ok
[INFO] [stdout] test methods::smith_schwartz::tests::ss_full_tie ... ok
[INFO] [stdout] test methods::nanson::tests::demo ... ok
[INFO] [stdout] test methods::smith_schwartz::strongly_connected::tests::sc_vm ... ok
[INFO] [stdout] test methods::smith_schwartz::tests::ss_cycle ... ok
[INFO] [stdout] test methods::smith_schwartz::tests::ss_leader_tie ... ok
[INFO] [stdout] test methods::smith_schwartz::tests::ss_weak ... ok
[INFO] [stdout] test methods::nanson::tests::single_cand ... ok
[INFO] [stdout] test methods::ranked_pairs::tests::no_cands ... ok
[INFO] [stdout] test methods::smith_schwartz::strongly_connected::tests::sc_ex ... ok
[INFO] [stdout] test methods::smith_schwartz::tests::ss_cycle_alt ... ok
[INFO] [stdout] test methods::smith_schwartz::strongly_connected::tests::sc_tricky ... ok
[INFO] [stdout] test methods::smith_schwartz::tests::ss_simple ... ok
[INFO] [stdout] test methods::minimax::tests::overflows ... ok
[INFO] [stdout] test prng::tests::state_stack ... ok
[INFO] [stdout] test prng::tests::upto ... ok
[INFO] [stdout] test prng::tests::random_element ... ok
[INFO] [stdout] test outcome::tests::placeholder_names ... ok
[INFO] [stdout] test prng::tests::only_element ... ok
[INFO] [stdout] test prng::tests::cmp_with_c ... ok
[INFO] [stdout] test methods::schulze::tests::schulze_basic ... ok
[INFO] [stdout] test methods::ranked_pairs::tests::ranked_pairs_schulze_wiki ... ok
[INFO] [stdout] test tally::tests::no_file_errors ... ok
[INFO] [stdout] test tally::tests::file_read ... ok
[INFO] [stdout] test prng::tests::shuffle ... ok
[INFO] [stdout] test methods::schulze::tests::schulze_no_wins ... ok
[INFO] [stdout] test tally::vote_matrix::tests::from_blt_and_idx ... ok
[INFO] [stdout] test tally::vote_tree::tests::count_ranks_skip ... ok
[INFO] [stdout] test tally::vote_tree::tests::ballot_streaming ... ok
[INFO] [stdout] test methods::schulze::tests::schulze_no_cands ... ok
[INFO] [stdout] test tally::vote_tree::tests::stv_branch_test ... ok
[INFO] [stdout] test tally::vote_tree::tests::transfer_votes ... ok
[INFO] [stdout] test tally::vote_tree::tests::assign_zero ... ok
[INFO] [stdout] test tally::vote_tree::tests::assign_votes_discrete ... ok
[INFO] [stdout] test tally::vote_tree::tests::transfer_zero_weight ... ok
[INFO] [stdout] test tally::vote_tree::tests::vote_tree_collect ... ok
[INFO] [stdout] test tally::vote_tree::tests::stv_from_blt ... ok
[INFO] [stdout] test tally::vote_tree::tests::count_ranks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 69 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wybr
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/methods/ranked_pairs.rs - methods::ranked_pairs (line 22) ... ok
[INFO] [stdout] test src/methods/nanson.rs - methods::nanson (line 14) ... ok
[INFO] [stdout] test src/methods/schulze.rs - methods::schulze (line 8) ... ok
[INFO] [stdout] test src/methods/alternative.rs - methods::alternative (line 10) ... ok
[INFO] [stdout] test src/methods/minimax.rs - methods::minimax (line 10) ... ok
[INFO] [stdout] test src/methods/irv.rs - methods::irv (line 14) ... ok
[INFO] [stdout] test src/methods/baldwin.rs - methods::baldwin (line 14) ... ok
[INFO] [stdout] test src/methods/meek.rs - methods::meek (line 22) ... ok
[INFO] [stdout] test src/methods/borda.rs - methods::borda (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4d4196bb99c7d4c4a0c2b366da5a30aee93c2c77f7c1bc4c1bc43f4741d8c2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d4196bb99c7d4c4a0c2b366da5a30aee93c2c77f7c1bc4c1bc43f4741d8c2a4", kill_on_drop: false }`
[INFO] [stdout] 4d4196bb99c7d4c4a0c2b366da5a30aee93c2c77f7c1bc4c1bc43f4741d8c2a4