[INFO] cloning repository https://github.com/cdelmas/99-problems-lists-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdelmas/99-problems-lists-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdelmas%2F99-problems-lists-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdelmas%2F99-problems-lists-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12d621d2e2e8489696f468f480cc8678e9e92248
[INFO] testing cdelmas/99-problems-lists-rs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdelmas%2F99-problems-lists-rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cdelmas/99-problems-lists-rs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cdelmas/99-problems-lists-rs
[INFO] finished tweaking git repo https://github.com/cdelmas/99-problems-lists-rs
[INFO] tweaked toml for git repo https://github.com/cdelmas/99-problems-lists-rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/cdelmas/99-problems-lists-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30287d6cf23f6a1afd7842f485c927a32e3da10e4892a4e2ce39abb203d8f0e9
[INFO] running `Command { std: "docker" "start" "-a" "30287d6cf23f6a1afd7842f485c927a32e3da10e4892a4e2ce39abb203d8f0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30287d6cf23f6a1afd7842f485c927a32e3da10e4892a4e2ce39abb203d8f0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30287d6cf23f6a1afd7842f485c927a32e3da10e4892a4e2ce39abb203d8f0e9", kill_on_drop: false }`
[INFO] [stdout] 30287d6cf23f6a1afd7842f485c927a32e3da10e4892a4e2ce39abb203d8f0e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c024f5024de624355cb35e0b73cfb5cbc2062b6686cfe1a0f89a44c120166533
[INFO] running `Command { std: "docker" "start" "-a" "c024f5024de624355cb35e0b73cfb5cbc2062b6686cfe1a0f89a44c120166533", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling factorial v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `last`
[INFO] [stdout]  --> src/lists/mod.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn last<A>(l: &[A]) -> Option<&A> {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `but_last`
[INFO] [stdout]   --> src/lists/mod.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn but_last<A>(l: &[A]) -> Option<&A> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `k_th`
[INFO] [stdout]   --> src/lists/mod.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn k_th<A>(l: &[A], index: usize) -> Option<&A> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length`
[INFO] [stdout]   --> src/lists/mod.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn length<A>(l: &[A]) -> usize {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]   --> src/lists/mod.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn reverse<A: Clone>(l: &[A]) -> Vec<A> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]   --> src/lists/mod.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn is_palindrome<A: Eq>(l: &[A]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Elem`
[INFO] [stdout]   --> src/lists/mod.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Elem(A),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `NestedList` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lists/mod.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `List`
[INFO] [stdout]   --> src/lists/mod.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     List(Vec<Box<NestedList<A>>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `NestedList` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lists/mod.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `flatten`
[INFO] [stdout]   --> src/lists/mod.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn flatten<A>(list: &NestedList<A>) -> Vec<&A> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_consecutive_duplicates`
[INFO] [stdout]   --> src/lists/mod.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn remove_consecutive_duplicates<A: Eq>(list: &[A]) -> Vec<&A> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pack_consecutive_duplicates`
[INFO] [stdout]   --> src/lists/mod.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn pack_consecutive_duplicates<A: Eq>(list: &[A]) -> Vec<Vec<&A>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `occurrences`
[INFO] [stdout]   --> src/lists/mod.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn occurrences<A: Eq>(list: &[A]) -> Vec<(usize, &A)> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Single`
[INFO] [stdout]   --> src/lists/mod.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Single(&'a A),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Occurrence` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lists/mod.rs:83:10
[INFO] [stdout]    |
[INFO] [stdout] 83 | #[derive(Clone, Debug, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Multiple`
[INFO] [stdout]   --> src/lists/mod.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     Multiple(usize, &'a A),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Occurrence` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lists/mod.rs:83:10
[INFO] [stdout]    |
[INFO] [stdout] 83 | #[derive(Clone, Debug, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lists/mod.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn new(size: usize, elem: &'a A) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_increment`
[INFO] [stdout]    --> src/lists/mod.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn can_increment(self: &Occurrence<'a, A>, elem: &'a A) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment`
[INFO] [stdout]    --> src/lists/mod.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn increment(occurrence: &'a Occurrence<A>, elem: &'a A) -> Option<Occurrence<'a, A>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]    --> src/lists/mod.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn encode<A: Eq>(list: &[A]) -> Vec<Occurrence<A>> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/lists/mod.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn decode<'a, A>(list: &'a [Occurrence<A>]) -> Vec<&'a A> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode_no_intermediary`
[INFO] [stdout]    --> src/lists/mod.rs:133:4
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn encode_no_intermediary<A: Eq>(list: &[A]) -> Vec<Occurrence<A>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `duplicate`
[INFO] [stdout]    --> src/lists/mod.rs:150:4
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn duplicate<A: Clone>(list: &[A]) -> Vec<A> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `replicate`
[INFO] [stdout]    --> src/lists/mod.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn replicate<A: Clone>(list: &[A], repl_num: u8) -> Vec<A> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drop_every_nth`
[INFO] [stdout]    --> src/lists/mod.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn drop_every_nth<A>(list: &[A], each: usize) -> Vec<&A> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `split_n`
[INFO] [stdout]    --> src/lists/mod.rs:173:4
[INFO] [stdout]     |
[INFO] [stdout] 173 | fn split_n<A>(list: &[A], at: usize) -> (&[A], &[A]) {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `slice`
[INFO] [stdout]    --> src/lists/mod.rs:181:4
[INFO] [stdout]     |
[INFO] [stdout] 181 | fn slice<A>(list: &[A], from: usize, to: usize) -> Option<&[A]> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotate`
[INFO] [stdout]    --> src/lists/mod.rs:189:4
[INFO] [stdout]     |
[INFO] [stdout] 189 | fn rotate<A: Clone>(list: &[A], n: isize) -> Vec<A> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_at`
[INFO] [stdout]    --> src/lists/mod.rs:200:4
[INFO] [stdout]     |
[INFO] [stdout] 200 | fn remove_at<A: Clone>(list: &[A], n: usize) -> Option<(A, Vec<A>)> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insert_at`
[INFO] [stdout]    --> src/lists/mod.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn insert_at<A: Clone>(list: &[A], a: A, at: usize) -> Vec<A> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `range`
[INFO] [stdout]    --> src/lists/mod.rs:216:4
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn range(from: u32, to: u32) -> Vec<u32> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_select`
[INFO] [stdout]    --> src/lists/mod.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn random_select<'a, A, R>(list: &'a [A], n: usize, rng: &mut R) -> Vec<&'a A>
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lottery_draw`
[INFO] [stdout]    --> src/lists/mod.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn lottery_draw<R>(upper_bound: u32, n: u32, rng: &mut R) -> Vec<u32>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_permutation`
[INFO] [stdout]    --> src/lists/mod.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn random_permutation<'a, A, R>(list: &'a [A], rng: &mut R) -> Vec<&'a A>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combinations`
[INFO] [stdout]    --> src/lists/mod.rs:247:4
[INFO] [stdout]     |
[INFO] [stdout] 247 | fn combinations<A>(list: &[A], n: usize) -> Vec<Vec<&A>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `group`
[INFO] [stdout]    --> src/lists/mod.rs:251:4
[INFO] [stdout]     |
[INFO] [stdout] 251 | fn group<A>(sizes: &[u8], list: &[A]) -> Option<Vec<Vec<Vec<A>>>>
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_by_length`
[INFO] [stdout]    --> src/lists/mod.rs:298:4
[INFO] [stdout]     |
[INFO] [stdout] 298 | fn sort_by_length<A>(list: &[Vec<A>]) -> Vec<Vec<A>>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.87s
[INFO] running `Command { std: "docker" "inspect" "c024f5024de624355cb35e0b73cfb5cbc2062b6686cfe1a0f89a44c120166533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c024f5024de624355cb35e0b73cfb5cbc2062b6686cfe1a0f89a44c120166533", kill_on_drop: false }`
[INFO] [stdout] c024f5024de624355cb35e0b73cfb5cbc2062b6686cfe1a0f89a44c120166533
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a6199418d2779d2e108abe6b63c019e0deeebc0b13e52969584888e2d47f3c0
[INFO] running `Command { std: "docker" "start" "-a" "7a6199418d2779d2e108abe6b63c019e0deeebc0b13e52969584888e2d47f3c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling proptest v1.0.0
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]    --> src/lists/mod.rs:839:13
[INFO] [stdout]     |
[INFO] [stdout] 839 |         use std::collections::BTreeMap;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]    --> src/lists/mod.rs:840:13
[INFO] [stdout]     |
[INFO] [stdout] 840 |         use std::iter::FromIterator;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length`
[INFO] [stdout]   --> src/lists/mod.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn length<A>(l: &[A]) -> usize {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_increment`
[INFO] [stdout]    --> src/lists/mod.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn can_increment(self: &Occurrence<'a, A>, elem: &'a A) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment`
[INFO] [stdout]    --> src/lists/mod.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn increment(occurrence: &'a Occurrence<A>, elem: &'a A) -> Option<Occurrence<'a, A>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.67s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/lists-e555c2c5a228197a)
[INFO] running `Command { std: "docker" "inspect" "7a6199418d2779d2e108abe6b63c019e0deeebc0b13e52969584888e2d47f3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a6199418d2779d2e108abe6b63c019e0deeebc0b13e52969584888e2d47f3c0", kill_on_drop: false }`
[INFO] [stdout] 7a6199418d2779d2e108abe6b63c019e0deeebc0b13e52969584888e2d47f3c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e5dee6983aa729cbcef4e6bd2036792f59287637584f682ad7c29400f8ca0b24
[INFO] running `Command { std: "docker" "start" "-a" "e5dee6983aa729cbcef4e6bd2036792f59287637584f682ad7c29400f8ca0b24", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::BTreeMap`
[INFO] [stderr]    --> src/lists/mod.rs:839:13
[INFO] [stderr]     |
[INFO] [stderr] 839 |         use std::collections::BTreeMap;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::FromIterator`
[INFO] [stderr]    --> src/lists/mod.rs:840:13
[INFO] [stderr]     |
[INFO] [stderr] 840 |         use std::iter::FromIterator;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `length`
[INFO] [stderr]   --> src/lists/mod.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn length<A>(l: &[A]) -> usize {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_increment`
[INFO] [stderr]    --> src/lists/mod.rs:101:8
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn can_increment(self: &Occurrence<'a, A>, elem: &'a A) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `increment`
[INFO] [stderr]    --> src/lists/mod.rs:108:8
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn increment(occurrence: &'a Occurrence<A>, elem: &'a A) -> Option<Occurrence<'a, A>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lists` (bin "lists" test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/lists-e555c2c5a228197a)
[INFO] [stdout] 
[INFO] [stdout] running 47 tests
[INFO] [stdout] test lists::test::decode_tests ... ok
[INFO] [stdout] test lists::test::drop_every_nth_test ... ok
[INFO] [stdout] test lists::test::encode_tests ... ok
[INFO] [stdout] test lists::test::flatten_an_elem_is_a_vector_with_the_elem ... ok
[INFO] [stdout] test lists::test::encode_no_intermediary_tests ... ok
[INFO] [stdout] test lists::test::flattened_contains_all_elems ... ok
[INFO] [stdout] test lists::test::group_by ... ok
[INFO] [stdout] test lists::test::is_a_palindrom ... ok
[INFO] [stdout] test lists::test::occurrences_tests ... ok
[INFO] [stdout] test lists::test::combinations_has_c_length_n_size ... ok
[INFO] [stdout] test lists::test::slice_from_bigger_than_to ... ok
[INFO] [stdout] test lists::test::but_last_is_reverse_second ... ok
[INFO] [stdout] test lists::test::slice_out_of_bounds ... ok
[INFO] [stdout] test lists::test::first_part_has_size_at_or_is_full_original ... ok
[INFO] [stdout] test lists::test::drop_every_nth_elem_of_the_list_removes_up_to_len_minus_len_div_n_elements ... ok
[INFO] [stdout] test lists::test::duplicates_has_two_times_the_size_of_the_original ... ok
[INFO] [stdout] test lists::test::slice_test ... ok
[INFO] [stdout] test lists::test::encoding_then_decoding_gives_the_original_array ... ok
[INFO] [stdout] test lists::test::combinations_have_elements_in_original ... ok
[INFO] [stdout] test lists::test::encode_no_intermediary_should_have_same_results_as_encode ... ok
[INFO] [stdout] test lists::test::kth_with_index_bigger_than_size_is_none ... ok
[INFO] [stdout] test lists::test::range_has_to_minus_from_elements_all_between_from_and_to ... ok
[INFO] [stdout] test lists::test::last_is_reverse_head ... ok
[INFO] [stdout] test lists::test::all_chosen_are_in_the_original_list ... ok
[INFO] [stdout] test lists::test::each_element_in_the_original_is_in_the_duplicates ... ok
[INFO] [stdout] test lists::test::split_then_join_leads_to_the_original ... ok
[INFO] [stdout] test lists::test::concatenate_the_reversed_is_a_palindrom ... ok
[INFO] [stdout] test lists::test::reverse_the_reversed_list_gives_the_original ... ok
[INFO] [stdout] test lists::test::kth_with_index_in_range_1_len_is_some ... ok
[INFO] [stdout] test lists::test::packing_leads_to_the_same_length_as_removing_dups ... ok
[INFO] [stdout] test lists::test::remove_at_is_some_list_with_one_less_elem_if_index_in_bounds_or_is_none ... ok
[INFO] [stdout] test lists::test::replicates_has_n_times_the_size_of_the_original ... ok
[INFO] [stdout] test lists::test::rotate_keeps_the_length_invariant ... ok
[INFO] [stdout] test lists::test::removing_duplicates_leaves_a_smaller_or_equal_length_list ... ok
[INFO] [stdout] test lists::test::insert_at_increase_length_by_1_and_all_elems_are_in_list ... ok
[INFO] [stdout] test lists::test::permutation_has_same_size_as_original ... ok
[INFO] [stdout] test lists::test::test_of_chosen_is_min_original_length_n ... ok
[INFO] [stdout] test lists::test::rotate_then_rotate_with_the_opposite_leaves_the_original ... ok
[INFO] [stdout] test lists::test::rotate_keeps_the_same_elements ... ok
[INFO] [stdout] test lists::test::permutation_has_same_elements_as_original ... ok
[INFO] [stdout] test lists::test::groups_has_multinomial_nb_of_solutions ... ok
[INFO] [stdout] test lists::test::each_element_in_the_original_is_in_the_replicates ... ok
[INFO] [stdout] test lists::test::vector_size_is_nodes_size ... ok
[INFO] [stdout] test lists::test::joining_each_solution_gives_back_the_original ... ok
[INFO] [stdout] test lists::test::lottery_draw_every_number_is_between_1_and_upper_bound ... ok
[INFO] [stdout] test lists::test::lottery_draw_result_has_size_equal_to_min_upper_bound_and_n ... ok
[INFO] [stdout] test lists::test::sort_by_length_has_same_elements_than_original ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 47 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e5dee6983aa729cbcef4e6bd2036792f59287637584f682ad7c29400f8ca0b24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5dee6983aa729cbcef4e6bd2036792f59287637584f682ad7c29400f8ca0b24", kill_on_drop: false }`
[INFO] [stdout] e5dee6983aa729cbcef4e6bd2036792f59287637584f682ad7c29400f8ca0b24