[INFO] cloning repository https://github.com/yuezato/algebra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuezato/algebra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuezato%2Falgebra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuezato%2Falgebra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 325e718c92d1abcfdad359d590f2cbe34276c3f4
[INFO] checking yuezato/algebra against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuezato%2Falgebra" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yuezato/algebra
[INFO] finished tweaking git repo https://github.com/yuezato/algebra
[INFO] tweaked toml for git repo https://github.com/yuezato/algebra written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yuezato/algebra on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yuezato/algebra already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07583f89c6db418dfdc54f2c3a18e70a064380c2509bd020883110f6221596ba
[INFO] running `Command { std: "docker" "start" "-a" "07583f89c6db418dfdc54f2c3a18e70a064380c2509bd020883110f6221596ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07583f89c6db418dfdc54f2c3a18e70a064380c2509bd020883110f6221596ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07583f89c6db418dfdc54f2c3a18e70a064380c2509bd020883110f6221596ba", kill_on_drop: false }`
[INFO] [stdout] 07583f89c6db418dfdc54f2c3a18e70a064380c2509bd020883110f6221596ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34d5d3a13cb3cedc7073e3cc82a1d6cc846a1d89c4c178698016273797f00869
[INFO] running `Command { std: "docker" "start" "-a" "34d5d3a13cb3cedc7073e3cc82a1d6cc846a1d89c4c178698016273797f00869", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bindgen v0.54.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling fast_array_ops v0.1.0 (https://github.com/yuezato/fast_array_ops#09d012d5)
[INFO] [stderr]     Checking algebra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bit_based_encdec.rs:535:13
[INFO] [stdout]     |
[INFO] [stdout] 535 |         let mut vanderm: Matrix<GF_2_8> = modified_systematic_vandermonde(
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bit_based_encdec.rs:582:13
[INFO] [stdout]     |
[INFO] [stdout] 582 |         let mut vanderm: Matrix<GF_2_8> = modified_systematic_vandermonde(
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/mebc.rs:95:28
[INFO] [stdout]    |
[INFO] [stdout] 95 |             .filter(|(key, val)| vecJ.contains(key))
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i1`
[INFO] [stdout]     --> src/bit_based_gf8.rs:1012:13
[INFO] [stdout]      |
[INFO] [stdout] 1012 |         let i1 = GF_2_8_impl::new(ppoly());
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]  --> src/mebc.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Data {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ops_len` is never used
[INFO] [stdout]   --> src/mebc.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn ops_len(data: &Data) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ops_len2` is never used
[INFO] [stdout]   --> src/mebc.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn ops_len2(data: &Data) -> usize {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update` is never used
[INFO] [stdout]   --> src/mebc.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn update(ms: &mut HashMap<usize, HashSet<usize>>, key: usize, val: usize) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `commands_to_data` is never used
[INFO] [stdout]   --> src/mebc.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn commands_to_data(commands: &[Command]) -> Data {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `data_to_commands` is never used
[INFO] [stdout]   --> src/mebc.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn data_to_commands(data: &Data) -> Vec<Command> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expand_from_core` is never used
[INFO] [stdout]   --> src/mebc.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn expand_from_core(data: &Data, p: Vec<&HashSet<usize>>) -> (Vec<usize>, Vec<usize>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_merit` is never used
[INFO] [stdout]    --> src/mebc.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn has_merit(nr_to: usize, nr_from: usize) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merit` is never used
[INFO] [stdout]    --> src/mebc.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn merit(nr_to: usize, nr_from: usize) -> usize {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `monte_carlo_maximum_edge_biclique` is never used
[INFO] [stdout]    --> src/mebc.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn monte_carlo_maximum_edge_biclique(data: &Data) -> (Vec<usize>, Vec<usize>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_sorted_vec` is never used
[INFO] [stdout]    --> src/mebc.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn to_sorted_vec<'a>(s: impl Iterator<Item = &'a usize>) -> Vec<usize> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dump_data` is never used
[INFO] [stdout]    --> src/mebc.rs:175:4
[INFO] [stdout]     |
[INFO] [stdout] 175 | fn dump_data(data: &Data) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_commands` is never used
[INFO] [stdout]    --> src/mebc.rs:186:4
[INFO] [stdout]     |
[INFO] [stdout] 186 | fn generate_commands(dsts: &Vec<usize>, srcs: &Vec<usize>) -> Vec<Command> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shrink_data_by_MEB` is never used
[INFO] [stdout]    --> src/mebc.rs:206:4
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn shrink_data_by_MEB(data: &mut Data) -> Vec<Command> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vecI` should have a snake case name
[INFO] [stdout]   --> src/mebc.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut vecI: Vec<usize> = Vec::new();
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `vec_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vecJ` should have a snake case name
[INFO] [stdout]   --> src/mebc.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut vecJ: Vec<usize> = Vec::new();
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `vec_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vecJ_inner` should have a snake case name
[INFO] [stdout]   --> src/mebc.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let vecJ_inner: Vec<&HashSet<usize>> =
[INFO] [stdout]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `vec_j_inner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shrink_data_by_MEB` should have a snake case name
[INFO] [stdout]    --> src/mebc.rs:206:4
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn shrink_data_by_MEB(data: &mut Data) -> Vec<Command> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `shrink_data_by_meb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/mebc.rs:95:28
[INFO] [stdout]    |
[INFO] [stdout] 95 |             .filter(|(key, val)| vecJ.contains(key))
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vecI` should have a snake case name
[INFO] [stdout]   --> src/mebc.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut vecI: Vec<usize> = Vec::new();
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `vec_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vecJ` should have a snake case name
[INFO] [stdout]   --> src/mebc.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut vecJ: Vec<usize> = Vec::new();
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `vec_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vecJ_inner` should have a snake case name
[INFO] [stdout]   --> src/mebc.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let vecJ_inner: Vec<&HashSet<usize>> =
[INFO] [stdout]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `vec_j_inner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shrink_data_by_MEB` should have a snake case name
[INFO] [stdout]    --> src/mebc.rs:206:4
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn shrink_data_by_MEB(data: &mut Data) -> Vec<Command> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `shrink_data_by_meb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vI` should have a snake case name
[INFO] [stdout]    --> src/mebc.rs:449:14
[INFO] [stdout]     |
[INFO] [stdout] 449 |         let (vI, vJ) = expand_from_core(&data, p);
[INFO] [stdout]     |              ^^ help: convert the identifier to snake case: `v_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `vJ` should have a snake case name
[INFO] [stdout]    --> src/mebc.rs:449:18
[INFO] [stdout]     |
[INFO] [stdout] 449 |         let (vI, vJ) = expand_from_core(&data, p);
[INFO] [stdout]     |                  ^^ help: convert the identifier to snake case: `v_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.79s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "34d5d3a13cb3cedc7073e3cc82a1d6cc846a1d89c4c178698016273797f00869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34d5d3a13cb3cedc7073e3cc82a1d6cc846a1d89c4c178698016273797f00869", kill_on_drop: false }`
[INFO] [stdout] 34d5d3a13cb3cedc7073e3cc82a1d6cc846a1d89c4c178698016273797f00869
