[INFO] crate urchin 0.1.1 is already in cache
[INFO] testing urchin-0.1.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate urchin 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate urchin 0.1.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate urchin 0.1.1
[INFO] finished tweaking crates.io crate urchin 0.1.1
[INFO] tweaked toml for crates.io crate urchin 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.44.0" "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] 8edc934e39e78228fa8e47e2a924cb42ae2224c5785d5a72aefc4889357f3f58
[INFO] running `"docker" "start" "-a" "8edc934e39e78228fa8e47e2a924cb42ae2224c5785d5a72aefc4889357f3f58"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling urchin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Promised`
[INFO] [stderr]  --> src/future.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Promised,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ok`
[INFO] [stderr]  --> src/future.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Ok(T),
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Err`
[INFO] [stderr]  --> src/future.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Err(E),
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `promised`
[INFO] [stderr]   --> src/future.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn promised() -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_val`
[INFO] [stderr]   --> src/future.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn from_val(val: T) -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_err`
[INFO] [stderr]   --> src/future.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn from_err(err: E) -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]   --> src/future.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn unwrap(self) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap_err`
[INFO] [stderr]   --> src/future.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unwrap_err(self) -> E {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_promised`
[INFO] [stderr]   --> src/future.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_promised(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_err`
[INFO] [stderr]   --> src/future.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn is_err(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_ok`
[INFO] [stderr]   --> src/future.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn is_ok(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]   --> src/future.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn ok(self) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `err`
[INFO] [stderr]   --> src/future.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn err(self) -> Option<E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_ok`
[INFO] [stderr]   --> src/future.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn set_ok(&mut self, val: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_err`
[INFO] [stderr]   --> src/future.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn set_err(&mut self, err: E) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Future`
[INFO] [stderr]    --> src/future.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Future<T, E> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `promised`
[INFO] [stderr]    --> src/future.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn promised() -> (Future<T, E>, Promise<T, E>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_val`
[INFO] [stderr]    --> src/future.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn from_val(val: T) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_err`
[INFO] [stderr]    --> src/future.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn from_err(err: E) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/future.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_promised`
[INFO] [stderr]    --> src/future.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn is_promised(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_ok`
[INFO] [stderr]    --> src/future.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_ok(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_err`
[INFO] [stderr]    --> src/future.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn is_err(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `err`
[INFO] [stderr]    --> src/future.rs:152:5
[INFO] [stderr]     |
[INFO] [stderr] 152 |     pub fn err(self) -> Option<E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]    --> src/future.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn ok(self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap_err`
[INFO] [stderr]    --> src/future.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn unwrap_err(self) -> E {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]    --> src/future.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     pub fn unwrap(self) -> T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Promise`
[INFO] [stderr]    --> src/future.rs:188:12
[INFO] [stderr]     |
[INFO] [stderr] 188 | pub struct Promise<T, E> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/future.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Promise<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve`
[INFO] [stderr]    --> src/future.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 201 |     pub fn resolve(self, res: Result<T, E>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `"docker" "inspect" "8edc934e39e78228fa8e47e2a924cb42ae2224c5785d5a72aefc4889357f3f58"`
[INFO] running `"docker" "rm" "-f" "8edc934e39e78228fa8e47e2a924cb42ae2224c5785d5a72aefc4889357f3f58"`
[INFO] [stdout] 8edc934e39e78228fa8e47e2a924cb42ae2224c5785d5a72aefc4889357f3f58
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.44.0" "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] 25a1c8dddc6928171b73706200c9e2e8145ccfeacda13086557191e49b8cf0ed
[INFO] running `"docker" "start" "-a" "25a1c8dddc6928171b73706200c9e2e8145ccfeacda13086557191e49b8cf0ed"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: variant is never constructed: `Promised`
[INFO] [stderr]  --> src/future.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Promised,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ok`
[INFO] [stderr]  --> src/future.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Ok(T),
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Err`
[INFO] [stderr]  --> src/future.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Err(E),
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `promised`
[INFO] [stderr]   --> src/future.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn promised() -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_val`
[INFO] [stderr]   --> src/future.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn from_val(val: T) -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_err`
[INFO] [stderr]   --> src/future.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn from_err(err: E) -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]   --> src/future.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn unwrap(self) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap_err`
[INFO] [stderr]   --> src/future.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unwrap_err(self) -> E {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_promised`
[INFO] [stderr]   --> src/future.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_promised(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_err`
[INFO] [stderr]   --> src/future.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn is_err(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_ok`
[INFO] [stderr]   --> src/future.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn is_ok(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]   --> src/future.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn ok(self) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `err`
[INFO] [stderr]   --> src/future.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn err(self) -> Option<E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_ok`
[INFO] [stderr]   --> src/future.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn set_ok(&mut self, val: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_err`
[INFO] [stderr]   --> src/future.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn set_err(&mut self, err: E) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Future`
[INFO] [stderr]    --> src/future.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Future<T, E> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `promised`
[INFO] [stderr]    --> src/future.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn promised() -> (Future<T, E>, Promise<T, E>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_val`
[INFO] [stderr]    --> src/future.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn from_val(val: T) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_err`
[INFO] [stderr]    --> src/future.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn from_err(err: E) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/future.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_promised`
[INFO] [stderr]    --> src/future.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn is_promised(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_ok`
[INFO] [stderr]    --> src/future.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_ok(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_err`
[INFO] [stderr]    --> src/future.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn is_err(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `err`
[INFO] [stderr]    --> src/future.rs:152:5
[INFO] [stderr]     |
[INFO] [stderr] 152 |     pub fn err(self) -> Option<E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]    --> src/future.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn ok(self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap_err`
[INFO] [stderr]    --> src/future.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn unwrap_err(self) -> E {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]    --> src/future.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     pub fn unwrap(self) -> T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Promise`
[INFO] [stderr]    --> src/future.rs:188:12
[INFO] [stderr]     |
[INFO] [stderr] 188 | pub struct Promise<T, E> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/future.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Promise<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve`
[INFO] [stderr]    --> src/future.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 201 |     pub fn resolve(self, res: Result<T, E>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling urchin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "25a1c8dddc6928171b73706200c9e2e8145ccfeacda13086557191e49b8cf0ed"`
[INFO] running `"docker" "rm" "-f" "25a1c8dddc6928171b73706200c9e2e8145ccfeacda13086557191e49b8cf0ed"`
[INFO] [stdout] 25a1c8dddc6928171b73706200c9e2e8145ccfeacda13086557191e49b8cf0ed
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] e136eb5924e9a93dfa549913ce5bbb0009450d2522f75f43e816d905c902b589
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e136eb5924e9a93dfa549913ce5bbb0009450d2522f75f43e816d905c902b589"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: variant is never constructed: `Promised`
[INFO] [stderr]  --> src/future.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Promised,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ok`
[INFO] [stderr]  --> src/future.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Ok(T),
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Err`
[INFO] [stderr]  --> src/future.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Err(E),
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `promised`
[INFO] [stderr]   --> src/future.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn promised() -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_val`
[INFO] [stderr]   --> src/future.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn from_val(val: T) -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_err`
[INFO] [stderr]   --> src/future.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn from_err(err: E) -> FutureInner<T, E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]   --> src/future.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn unwrap(self) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap_err`
[INFO] [stderr]   --> src/future.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unwrap_err(self) -> E {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_promised`
[INFO] [stderr]   --> src/future.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_promised(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_err`
[INFO] [stderr]   --> src/future.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn is_err(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_ok`
[INFO] [stderr]   --> src/future.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn is_ok(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]   --> src/future.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn ok(self) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `err`
[INFO] [stderr]   --> src/future.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn err(self) -> Option<E> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_ok`
[INFO] [stderr]   --> src/future.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn set_ok(&mut self, val: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_err`
[INFO] [stderr]   --> src/future.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn set_err(&mut self, err: E) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Future`
[INFO] [stderr]    --> src/future.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Future<T, E> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `promised`
[INFO] [stderr]    --> src/future.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn promised() -> (Future<T, E>, Promise<T, E>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_val`
[INFO] [stderr]    --> src/future.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn from_val(val: T) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_err`
[INFO] [stderr]    --> src/future.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn from_err(err: E) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/future.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Future<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_promised`
[INFO] [stderr]    --> src/future.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn is_promised(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_ok`
[INFO] [stderr]    --> src/future.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_ok(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_err`
[INFO] [stderr]    --> src/future.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn is_err(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `err`
[INFO] [stderr]    --> src/future.rs:152:5
[INFO] [stderr]     |
[INFO] [stderr] 152 |     pub fn err(self) -> Option<E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]    --> src/future.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn ok(self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap_err`
[INFO] [stderr]    --> src/future.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn unwrap_err(self) -> E {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]    --> src/future.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     pub fn unwrap(self) -> T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Promise`
[INFO] [stderr]    --> src/future.rs:188:12
[INFO] [stderr]     |
[INFO] [stderr] 188 | pub struct Promise<T, E> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/future.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Promise<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve`
[INFO] [stderr]    --> src/future.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 201 |     pub fn resolve(self, res: Result<T, E>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/urchin-d26c92f8a257fc75
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test future::test::future_promise_err ... ok
[INFO] [stdout] test future::test::future_ok ... ok
[INFO] [stdout] test future::test::future_err ... ok
[INFO] [stdout] test future::test::future_unwrap ... ok
[INFO] [stdout] test future::test::future_promise_ok ... ok
[INFO] [stdout] test future::test::future_unwrap_err ... ok
[INFO] [stdout] test future::test::future_ok_unwrap_err ... ok
[INFO] [stdout] test future::test::future_err_unwrap ... ok
[INFO] [stdout] test future::test::future_promised_unwrap ... ok
[INFO] [stdout] test future::test::future_promised_unwrap_err ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests urchin
[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" "e136eb5924e9a93dfa549913ce5bbb0009450d2522f75f43e816d905c902b589"`
[INFO] running `"docker" "rm" "-f" "e136eb5924e9a93dfa549913ce5bbb0009450d2522f75f43e816d905c902b589"`
[INFO] [stdout] e136eb5924e9a93dfa549913ce5bbb0009450d2522f75f43e816d905c902b589