[INFO] cloning repository https://github.com/121601571/rust_dicttree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/121601571/rust_dicttree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F121601571%2Frust_dicttree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F121601571%2Frust_dicttree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cdd1d20ccfb8525bf564fb69206df89d54031bf
[INFO] testing 121601571/rust_dicttree against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F121601571%2Frust_dicttree" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/121601571/rust_dicttree on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/121601571/rust_dicttree
[INFO] finished tweaking git repo https://github.com/121601571/rust_dicttree
[INFO] tweaked toml for git repo https://github.com/121601571/rust_dicttree written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/121601571/rust_dicttree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt-derive v0.4.18
[INFO] [stderr]   Downloaded structopt v0.3.25
[INFO] [stderr]   Downloaded mini-redis v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f3e96880eae37cdaa1b3ecc90717da4f0186e654bd8bcc6c42c56271dbcb75e
[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" "1f3e96880eae37cdaa1b3ecc90717da4f0186e654bd8bcc6c42c56271dbcb75e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f3e96880eae37cdaa1b3ecc90717da4f0186e654bd8bcc6c42c56271dbcb75e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f3e96880eae37cdaa1b3ecc90717da4f0186e654bd8bcc6c42c56271dbcb75e", kill_on_drop: false }`
[INFO] [stdout] 1f3e96880eae37cdaa1b3ecc90717da4f0186e654bd8bcc6c42c56271dbcb75e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8041683ef999e73439569147e107113a8fdeee79f6a10ef0d6a4b7ae495ad39
[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" "b8041683ef999e73439569147e107113a8fdeee79f6a10ef0d6a4b7ae495ad39", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling atoi v0.3.3
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling tokio-macros v1.6.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling structopt v0.3.25
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling tokio-stream v0.1.8
[INFO] [stderr]    Compiling mini-redis v0.4.1
[INFO] [stderr]    Compiling dict_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut res = vec![];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut res = vec![];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         val: char,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `suffix`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         suffix: Option<Vec<MyTree>>,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `endpoint`
[INFO] [stdout]  --> src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         endpoint: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains_value`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |         fn contains_value(&self, input: char) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_suffix`
[INFO] [stdout]   --> src/lib.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |         pub fn find_suffix(&mut self, input: Vec<char>) -> Vec<Vec<char>> {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_self_values_dry`
[INFO] [stdout]   --> src/lib.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |         pub fn iter_self_values_dry(&self) -> Vec<Vec<char>> {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_self_values`
[INFO] [stdout]   --> src/lib.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |         fn iter_self_values(&self, contains_self: bool) -> Vec<Vec<char>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_value_node`
[INFO] [stdout]   --> src/lib.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |         fn iter_value_node(&mut self, input: char) -> &mut MyTree {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:110:16
[INFO] [stdout]     |
[INFO] [stdout] 110 |         pub fn new(node_val: char, ep: bool) -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains_whole`
[INFO] [stdout]    --> src/lib.rs:118:16
[INFO] [stdout]     |
[INFO] [stdout] 118 |         pub fn contains_whole(&mut self, input: Vec<char>) -> bool {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_chars`
[INFO] [stdout]    --> src/lib.rs:133:16
[INFO] [stdout]     |
[INFO] [stdout] 133 |         pub fn add_chars(&mut self, input: Vec<char>) {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_gen`
[INFO] [stdout]  --> src/mass_test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn random_gen() -> Vec<char> {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mass_gen`
[INFO] [stdout]   --> src/mass_test.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn mass_gen(sum1: u32) -> Vec<Vec<char>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `Command { std: "docker" "inspect" "b8041683ef999e73439569147e107113a8fdeee79f6a10ef0d6a4b7ae495ad39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8041683ef999e73439569147e107113a8fdeee79f6a10ef0d6a4b7ae495ad39", kill_on_drop: false }`
[INFO] [stdout] b8041683ef999e73439569147e107113a8fdeee79f6a10ef0d6a4b7ae495ad39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 644255baf610bec1b2b01f3e6f5c2ba020e0a3f0f32497d67fceffcc2f453fa7
[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" "644255baf610bec1b2b01f3e6f5c2ba020e0a3f0f32497d67fceffcc2f453fa7", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut res = vec![];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dict_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut res = vec![];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut res = vec![];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         val: char,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `suffix`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         suffix: Option<Vec<MyTree>>,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `endpoint`
[INFO] [stdout]  --> src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         endpoint: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains_value`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |         fn contains_value(&self, input: char) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_suffix`
[INFO] [stdout]   --> src/lib.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |         pub fn find_suffix(&mut self, input: Vec<char>) -> Vec<Vec<char>> {
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_self_values_dry`
[INFO] [stdout]   --> src/lib.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |         pub fn iter_self_values_dry(&self) -> Vec<Vec<char>> {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_self_values`
[INFO] [stdout]   --> src/lib.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |         fn iter_self_values(&self, contains_self: bool) -> Vec<Vec<char>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_value_node`
[INFO] [stdout]   --> src/lib.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |         fn iter_value_node(&mut self, input: char) -> &mut MyTree {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:110:16
[INFO] [stdout]     |
[INFO] [stdout] 110 |         pub fn new(node_val: char, ep: bool) -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains_whole`
[INFO] [stdout]    --> src/lib.rs:118:16
[INFO] [stdout]     |
[INFO] [stdout] 118 |         pub fn contains_whole(&mut self, input: Vec<char>) -> bool {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_chars`
[INFO] [stdout]    --> src/lib.rs:133:16
[INFO] [stdout]     |
[INFO] [stdout] 133 |         pub fn add_chars(&mut self, input: Vec<char>) {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_gen`
[INFO] [stdout]  --> src/mass_test.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn random_gen() -> Vec<char> {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mass_gen`
[INFO] [stdout]   --> src/mass_test.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn mass_gen(sum1: u32) -> Vec<Vec<char>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "644255baf610bec1b2b01f3e6f5c2ba020e0a3f0f32497d67fceffcc2f453fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "644255baf610bec1b2b01f3e6f5c2ba020e0a3f0f32497d67fceffcc2f453fa7", kill_on_drop: false }`
[INFO] [stdout] 644255baf610bec1b2b01f3e6f5c2ba020e0a3f0f32497d67fceffcc2f453fa7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f83223b838c1aac2203fb09732203b6402d937754e82245c87811a6d11bd0090
[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" "f83223b838c1aac2203fb09732203b6402d937754e82245c87811a6d11bd0090", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut res = vec![];
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `dict_tree` (lib) generated 1 warning
[INFO] [stderr] warning: `dict_tree` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: field is never read: `val`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |         val: char,
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `suffix`
[INFO] [stderr]  --> src/lib.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         suffix: Option<Vec<MyTree>>,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `endpoint`
[INFO] [stderr]  --> src/lib.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |         endpoint: bool,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `contains_value`
[INFO] [stderr]   --> src/lib.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |         fn contains_value(&self, input: char) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_suffix`
[INFO] [stderr]   --> src/lib.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |         pub fn find_suffix(&mut self, input: Vec<char>) -> Vec<Vec<char>> {
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter_self_values_dry`
[INFO] [stderr]   --> src/lib.rs:59:16
[INFO] [stderr]    |
[INFO] [stderr] 59 |         pub fn iter_self_values_dry(&self) -> Vec<Vec<char>> {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter_self_values`
[INFO] [stderr]   --> src/lib.rs:73:12
[INFO] [stderr]    |
[INFO] [stderr] 73 |         fn iter_self_values(&self, contains_self: bool) -> Vec<Vec<char>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter_value_node`
[INFO] [stderr]   --> src/lib.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 |         fn iter_value_node(&mut self, input: char) -> &mut MyTree {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/lib.rs:110:16
[INFO] [stderr]     |
[INFO] [stderr] 110 |         pub fn new(node_val: char, ep: bool) -> Self {
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `contains_whole`
[INFO] [stderr]    --> src/lib.rs:118:16
[INFO] [stderr]     |
[INFO] [stderr] 118 |         pub fn contains_whole(&mut self, input: Vec<char>) -> bool {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_chars`
[INFO] [stderr]    --> src/lib.rs:133:16
[INFO] [stderr]     |
[INFO] [stderr] 133 |         pub fn add_chars(&mut self, input: Vec<char>) {
[INFO] [stderr]     |                ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `random_gen`
[INFO] [stderr]  --> src/mass_test.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn random_gen() -> Vec<char> {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mass_gen`
[INFO] [stderr]   --> src/mass_test.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn mass_gen(sum1: u32) -> Vec<Vec<char>> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `dict_tree` (bin "dict_tree" test) generated 14 warnings (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dict_tree-d86ba5f9e3cb90ec)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dict_tree-04e03b19dca04353)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dict_tree
[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; finished in 0.00s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f83223b838c1aac2203fb09732203b6402d937754e82245c87811a6d11bd0090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f83223b838c1aac2203fb09732203b6402d937754e82245c87811a6d11bd0090", kill_on_drop: false }`
[INFO] [stdout] f83223b838c1aac2203fb09732203b6402d937754e82245c87811a6d11bd0090