[INFO] updating cached repository https://github.com/zprobst/oxidize
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2ac7c7b9c7fc1fbfeddfc5282e321be551ed06df
[INFO] testing zprobst/oxidize against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzprobst%2Foxidize" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zprobst/oxidize on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zprobst/oxidize
[INFO] finished tweaking git repo https://github.com/zprobst/oxidize
[INFO] tweaked toml for git repo https://github.com/zprobst/oxidize written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/zprobst/oxidize already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7426b66958f540a52a3ac4e679d0f44eb0737c79722e2ac5fb8c068151a2e844
[INFO] running `"docker" "start" "-a" "7426b66958f540a52a3ac4e679d0f44eb0737c79722e2ac5fb8c068151a2e844"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling deunicode v0.4.3
[INFO] [stderr]    Compiling humansize v1.1.0
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling slug v0.1.4
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling unic-ucd-segment v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling unic-segment v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling parse-zoneinfo v0.2.1
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling ignore v0.4.14
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling chrono-tz v0.5.1
[INFO] [stderr]    Compiling globwalk v0.8.0
[INFO] [stderr]    Compiling tera v1.2.0
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `request`
[INFO] [stderr]   --> src/views.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         request: &Request,
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_request`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]   --> src/views.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         params: &HashMap<String, Option<String>>,
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/template_render.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut context = Context::new();
[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: struct is never constructed: `Request`
[INFO] [stderr]   --> src/routing.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Request {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Response`
[INFO] [stderr]   --> src/routing.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Response {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/routing.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new() -> Response {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Route`
[INFO] [stderr]   --> src/routing.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub struct Route {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/routing.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn new(pattern: &str, view: &str, methods: Option<Vec<&str>>) -> Route {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `save_pattern_matches`
[INFO] [stderr]    --> src/routing.rs:168:8
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn save_pattern_matches(&mut self, captures: Captures<'_>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `applies_to_request`
[INFO] [stderr]    --> src/routing.rs:183:12
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn applies_to_request(&mut self, request: &Request) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_response`
[INFO] [stderr]    --> src/routing.rs:205:12
[INFO] [stderr]     |
[INFO] [stderr] 205 |     pub fn to_response(&self, request: &Request) -> Response {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TemplateRenderer`
[INFO] [stderr]  --> src/template_render.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct TemplateRenderer {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/template_render.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(glob: &str) -> Result<TemplateRenderer, ()> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reload`
[INFO] [stderr]   --> src/template_render.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn reload(&mut self) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `render`
[INFO] [stderr]   --> src/template_render.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn render(&self, template_name: &str) -> Result<String, ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `View`
[INFO] [stderr]  --> src/views.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct View<'a> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/views.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(py_path: &'a str) -> View<'a> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_response`
[INFO] [stderr]   --> src/views.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn get_response(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `"docker" "inspect" "7426b66958f540a52a3ac4e679d0f44eb0737c79722e2ac5fb8c068151a2e844"`
[INFO] running `"docker" "rm" "-f" "7426b66958f540a52a3ac4e679d0f44eb0737c79722e2ac5fb8c068151a2e844"`
[INFO] [stdout] 7426b66958f540a52a3ac4e679d0f44eb0737c79722e2ac5fb8c068151a2e844
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb0dabb42ba6a01e5237cc162dd43608f41155b1b0e6ecc515c3c2ebd28d4abf
[INFO] running `"docker" "start" "-a" "fb0dabb42ba6a01e5237cc162dd43608f41155b1b0e6ecc515c3c2ebd28d4abf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `request`
[INFO] [stderr]   --> src/views.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         request: &Request,
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_request`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]   --> src/views.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         params: &HashMap<String, Option<String>>,
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/template_render.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut context = Context::new();
[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: struct is never constructed: `Request`
[INFO] [stderr]   --> src/routing.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Request {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Response`
[INFO] [stderr]   --> src/routing.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Response {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/routing.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new() -> Response {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Route`
[INFO] [stderr]   --> src/routing.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub struct Route {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/routing.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn new(pattern: &str, view: &str, methods: Option<Vec<&str>>) -> Route {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `save_pattern_matches`
[INFO] [stderr]    --> src/routing.rs:168:8
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn save_pattern_matches(&mut self, captures: Captures<'_>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `applies_to_request`
[INFO] [stderr]    --> src/routing.rs:183:12
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn applies_to_request(&mut self, request: &Request) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_response`
[INFO] [stderr]    --> src/routing.rs:205:12
[INFO] [stderr]     |
[INFO] [stderr] 205 |     pub fn to_response(&self, request: &Request) -> Response {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TemplateRenderer`
[INFO] [stderr]  --> src/template_render.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct TemplateRenderer {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/template_render.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(glob: &str) -> Result<TemplateRenderer, ()> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reload`
[INFO] [stderr]   --> src/template_render.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn reload(&mut self) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `render`
[INFO] [stderr]   --> src/template_render.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn render(&self, template_name: &str) -> Result<String, ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `View`
[INFO] [stderr]  --> src/views.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct View<'a> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/views.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(py_path: &'a str) -> View<'a> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_response`
[INFO] [stderr]   --> src/views.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn get_response(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `request`
[INFO] [stderr]   --> src/views.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         request: &Request,
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_request`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]   --> src/views.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         params: &HashMap<String, Option<String>>,
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/template_render.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut context = Context::new();
[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: struct is never constructed: `Request`
[INFO] [stderr]   --> src/routing.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Request {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Response`
[INFO] [stderr]   --> src/routing.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Response {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/routing.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new() -> Response {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Route`
[INFO] [stderr]   --> src/routing.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub struct Route {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/routing.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn new(pattern: &str, view: &str, methods: Option<Vec<&str>>) -> Route {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `save_pattern_matches`
[INFO] [stderr]    --> src/routing.rs:168:8
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn save_pattern_matches(&mut self, captures: Captures<'_>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `applies_to_request`
[INFO] [stderr]    --> src/routing.rs:183:12
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn applies_to_request(&mut self, request: &Request) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_response`
[INFO] [stderr]    --> src/routing.rs:205:12
[INFO] [stderr]     |
[INFO] [stderr] 205 |     pub fn to_response(&self, request: &Request) -> Response {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TemplateRenderer`
[INFO] [stderr]  --> src/template_render.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct TemplateRenderer {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/template_render.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(glob: &str) -> Result<TemplateRenderer, ()> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reload`
[INFO] [stderr]   --> src/template_render.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn reload(&mut self) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `render`
[INFO] [stderr]   --> src/template_render.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn render(&self, template_name: &str) -> Result<String, ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `View`
[INFO] [stderr]  --> src/views.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct View<'a> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/views.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(py_path: &'a str) -> View<'a> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_response`
[INFO] [stderr]   --> src/views.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn get_response(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "fb0dabb42ba6a01e5237cc162dd43608f41155b1b0e6ecc515c3c2ebd28d4abf"`
[INFO] running `"docker" "rm" "-f" "fb0dabb42ba6a01e5237cc162dd43608f41155b1b0e6ecc515c3c2ebd28d4abf"`
[INFO] [stdout] fb0dabb42ba6a01e5237cc162dd43608f41155b1b0e6ecc515c3c2ebd28d4abf
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5d7714cf3dbcd2629a423f97a2391e2e8a63470cba9d81c29a66148413cc8015
[INFO] running `"docker" "start" "-a" "5d7714cf3dbcd2629a423f97a2391e2e8a63470cba9d81c29a66148413cc8015"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `request`
[INFO] [stderr]   --> src/views.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         request: &Request,
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_request`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]   --> src/views.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         params: &HashMap<String, Option<String>>,
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/template_render.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut context = Context::new();
[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: struct is never constructed: `Request`
[INFO] [stderr]   --> src/routing.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Request {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Response`
[INFO] [stderr]   --> src/routing.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Response {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/routing.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new() -> Response {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Route`
[INFO] [stderr]   --> src/routing.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub struct Route {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/routing.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn new(pattern: &str, view: &str, methods: Option<Vec<&str>>) -> Route {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `save_pattern_matches`
[INFO] [stderr]    --> src/routing.rs:168:8
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn save_pattern_matches(&mut self, captures: Captures<'_>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `applies_to_request`
[INFO] [stderr]    --> src/routing.rs:183:12
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn applies_to_request(&mut self, request: &Request) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_response`
[INFO] [stderr]    --> src/routing.rs:205:12
[INFO] [stderr]     |
[INFO] [stderr] 205 |     pub fn to_response(&self, request: &Request) -> Response {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TemplateRenderer`
[INFO] [stderr]  --> src/template_render.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct TemplateRenderer {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/template_render.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(glob: &str) -> Result<TemplateRenderer, ()> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reload`
[INFO] [stderr]   --> src/template_render.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn reload(&mut self) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `render`
[INFO] [stderr]   --> src/template_render.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn render(&self, template_name: &str) -> Result<String, ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `View`
[INFO] [stderr]  --> src/views.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct View<'a> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/views.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(py_path: &'a str) -> View<'a> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_response`
[INFO] [stderr]   --> src/views.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn get_response(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `request`
[INFO] [stderr]   --> src/views.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         request: &Request,
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_request`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `params`
[INFO] [stderr]   --> src/views.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         params: &HashMap<String, Option<String>>,
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/template_render.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut context = Context::new();
[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: struct is never constructed: `Request`
[INFO] [stderr]   --> src/routing.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Request {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Response`
[INFO] [stderr]   --> src/routing.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Response {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/routing.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn new() -> Response {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Route`
[INFO] [stderr]   --> src/routing.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub struct Route {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/routing.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn new(pattern: &str, view: &str, methods: Option<Vec<&str>>) -> Route {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `save_pattern_matches`
[INFO] [stderr]    --> src/routing.rs:168:8
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn save_pattern_matches(&mut self, captures: Captures<'_>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `applies_to_request`
[INFO] [stderr]    --> src/routing.rs:183:12
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn applies_to_request(&mut self, request: &Request) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_response`
[INFO] [stderr]    --> src/routing.rs:205:12
[INFO] [stderr]     |
[INFO] [stderr] 205 |     pub fn to_response(&self, request: &Request) -> Response {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TemplateRenderer`
[INFO] [stderr]  --> src/template_render.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct TemplateRenderer {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/template_render.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(glob: &str) -> Result<TemplateRenderer, ()> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reload`
[INFO] [stderr]   --> src/template_render.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn reload(&mut self) -> Result<(), ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `render`
[INFO] [stderr]   --> src/template_render.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn render(&self, template_name: &str) -> Result<String, ()> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `View`
[INFO] [stderr]  --> src/views.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct View<'a> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/views.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(py_path: &'a str) -> View<'a> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_response`
[INFO] [stderr]   --> src/views.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn get_response(
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learning_rust-3169d864583590bd
[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] [stderr]    Doc-tests learning-rust
[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 `"docker" "inspect" "5d7714cf3dbcd2629a423f97a2391e2e8a63470cba9d81c29a66148413cc8015"`
[INFO] running `"docker" "rm" "-f" "5d7714cf3dbcd2629a423f97a2391e2e8a63470cba9d81c29a66148413cc8015"`
[INFO] [stdout] 5d7714cf3dbcd2629a423f97a2391e2e8a63470cba9d81c29a66148413cc8015