[INFO] crate urchin 0.1.1 is already in cache
[INFO] testing urchin-0.1.1 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate urchin 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate urchin 0.1.1 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6b5a34ea93c53d3c7b88f8b64efe5092efb65637387e52382db43eef456ac13e
[INFO] running `Command { std: "docker" "start" "-a" "6b5a34ea93c53d3c7b88f8b64efe5092efb65637387e52382db43eef456ac13e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b5a34ea93c53d3c7b88f8b64efe5092efb65637387e52382db43eef456ac13e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b5a34ea93c53d3c7b88f8b64efe5092efb65637387e52382db43eef456ac13e", kill_on_drop: false }`
[INFO] [stdout] 6b5a34ea93c53d3c7b88f8b64efe5092efb65637387e52382db43eef456ac13e
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f27432b85a70912cf625ddfb61a10b3b605cab7cad2a799a33514392746464ba
[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" "f27432b85a70912cf625ddfb61a10b3b605cab7cad2a799a33514392746464ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling urchin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Promised`
[INFO] [stdout]  --> src/future.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Promised,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ok`
[INFO] [stdout]  --> src/future.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Ok(T),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Err`
[INFO] [stdout]  --> src/future.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Err(E),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `promised`
[INFO] [stdout]   --> src/future.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn promised() -> FutureInner<T, E> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_val`
[INFO] [stdout]   --> src/future.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn from_val(val: T) -> FutureInner<T, E> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_err`
[INFO] [stdout]   --> src/future.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn from_err(err: E) -> FutureInner<T, E> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap`
[INFO] [stdout]   --> src/future.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn unwrap(self) -> T {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_err`
[INFO] [stdout]   --> src/future.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn unwrap_err(self) -> E {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect`
[INFO] [stdout]   --> src/future.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_promised`
[INFO] [stdout]   --> src/future.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn is_promised(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_err`
[INFO] [stdout]   --> src/future.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn is_err(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_ok`
[INFO] [stdout]   --> src/future.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn is_ok(&self) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ok`
[INFO] [stdout]   --> src/future.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn ok(self) -> Option<T> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `err`
[INFO] [stdout]   --> src/future.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn err(self) -> Option<E> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_ok`
[INFO] [stdout]   --> src/future.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn set_ok(&mut self, val: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_err`
[INFO] [stdout]   --> src/future.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn set_err(&mut self, err: E) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Future`
[INFO] [stdout]    --> src/future.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct Future<T, E> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `promised`
[INFO] [stdout]    --> src/future.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn promised() -> (Future<T, E>, Promise<T, E>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_val`
[INFO] [stdout]    --> src/future.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn from_val(val: T) -> Future<T, E> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_err`
[INFO] [stdout]    --> src/future.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn from_err(err: E) -> Future<T, E> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/future.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Future<T, E> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_promised`
[INFO] [stdout]    --> src/future.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn is_promised(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_ok`
[INFO] [stdout]    --> src/future.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn is_ok(&self) -> bool {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_err`
[INFO] [stdout]    --> src/future.rs:146:12
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn is_err(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `err`
[INFO] [stdout]    --> src/future.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn err(self) -> Option<E> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ok`
[INFO] [stdout]    --> src/future.rs:160:12
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn ok(self) -> Option<T> {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_err`
[INFO] [stdout]    --> src/future.rs:169:12
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn unwrap_err(self) -> E {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap`
[INFO] [stdout]    --> src/future.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn unwrap(self) -> T {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Promise`
[INFO] [stdout]    --> src/future.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct Promise<T, E> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/future.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Promise<T, E> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resolve`
[INFO] [stdout]    --> src/future.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn resolve(self, res: Result<T, E>) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "f27432b85a70912cf625ddfb61a10b3b605cab7cad2a799a33514392746464ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f27432b85a70912cf625ddfb61a10b3b605cab7cad2a799a33514392746464ba", kill_on_drop: false }`
[INFO] [stdout] f27432b85a70912cf625ddfb61a10b3b605cab7cad2a799a33514392746464ba
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8858e387fff89a77cabdee6def04599399e9123165ac14f08b0b41b84e074ec2
[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" "8858e387fff89a77cabdee6def04599399e9123165ac14f08b0b41b84e074ec2", kill_on_drop: false }`
[INFO] [stdout] warning: variant is never constructed: `Promised`
[INFO] [stdout]  --> src/future.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Promised,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling urchin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Ok`
[INFO] [stdout]  --> src/future.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Ok(T),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Err`
[INFO] [stdout]  --> src/future.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Err(E),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `promised`
[INFO] [stdout]   --> src/future.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn promised() -> FutureInner<T, E> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_val`
[INFO] [stdout]   --> src/future.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn from_val(val: T) -> FutureInner<T, E> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_err`
[INFO] [stdout]   --> src/future.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn from_err(err: E) -> FutureInner<T, E> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap`
[INFO] [stdout]   --> src/future.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn unwrap(self) -> T {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_err`
[INFO] [stdout]   --> src/future.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn unwrap_err(self) -> E {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect`
[INFO] [stdout]   --> src/future.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_promised`
[INFO] [stdout]   --> src/future.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn is_promised(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_err`
[INFO] [stdout]   --> src/future.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn is_err(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_ok`
[INFO] [stdout]   --> src/future.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn is_ok(&self) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ok`
[INFO] [stdout]   --> src/future.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn ok(self) -> Option<T> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `err`
[INFO] [stdout]   --> src/future.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn err(self) -> Option<E> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_ok`
[INFO] [stdout]   --> src/future.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn set_ok(&mut self, val: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_err`
[INFO] [stdout]   --> src/future.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn set_err(&mut self, err: E) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Future`
[INFO] [stdout]    --> src/future.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct Future<T, E> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `promised`
[INFO] [stdout]    --> src/future.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn promised() -> (Future<T, E>, Promise<T, E>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_val`
[INFO] [stdout]    --> src/future.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn from_val(val: T) -> Future<T, E> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_err`
[INFO] [stdout]    --> src/future.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn from_err(err: E) -> Future<T, E> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/future.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Future<T, E> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_promised`
[INFO] [stdout]    --> src/future.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn is_promised(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_ok`
[INFO] [stdout]    --> src/future.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn is_ok(&self) -> bool {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_err`
[INFO] [stdout]    --> src/future.rs:146:12
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn is_err(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `err`
[INFO] [stdout]    --> src/future.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn err(self) -> Option<E> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ok`
[INFO] [stdout]    --> src/future.rs:160:12
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn ok(self) -> Option<T> {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_err`
[INFO] [stdout]    --> src/future.rs:169:12
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn unwrap_err(self) -> E {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap`
[INFO] [stdout]    --> src/future.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn unwrap(self) -> T {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Promise`
[INFO] [stdout]    --> src/future.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct Promise<T, E> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/future.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Promise<T, E> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resolve`
[INFO] [stdout]    --> src/future.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn resolve(self, res: Result<T, E>) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect`
[INFO] [stdout]   --> src/future.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "8858e387fff89a77cabdee6def04599399e9123165ac14f08b0b41b84e074ec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8858e387fff89a77cabdee6def04599399e9123165ac14f08b0b41b84e074ec2", kill_on_drop: false }`
[INFO] [stdout] 8858e387fff89a77cabdee6def04599399e9123165ac14f08b0b41b84e074ec2
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad71e98aeeb5bbe3c8ae28ecabd73ca9a70b0d17009823ae5d8a01e8aeb3f9cd
[INFO] running `Command { std: "docker" "start" "-a" "ad71e98aeeb5bbe3c8ae28ecabd73ca9a70b0d17009823ae5d8a01e8aeb3f9cd", kill_on_drop: false }`
[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: associated function is never used: `promised`
[INFO] [stderr]   --> src/future.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn promised() -> FutureInner<T, E> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_val`
[INFO] [stderr]   --> src/future.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn from_val(val: T) -> FutureInner<T, E> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_err`
[INFO] [stderr]   --> src/future.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn from_err(err: E) -> FutureInner<T, E> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unwrap`
[INFO] [stderr]   --> src/future.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn unwrap(self) -> T {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unwrap_err`
[INFO] [stderr]   --> src/future.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unwrap_err(self) -> E {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn expect(self, _msg: &str) -> T {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_promised`
[INFO] [stderr]   --> src/future.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_promised(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_err`
[INFO] [stderr]   --> src/future.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn is_err(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_ok`
[INFO] [stderr]   --> src/future.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn is_ok(&self) -> bool {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `ok`
[INFO] [stderr]   --> src/future.rs:78:8
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn ok(self) -> Option<T> {
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `err`
[INFO] [stderr]   --> src/future.rs:85:8
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn err(self) -> Option<E> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_ok`
[INFO] [stderr]   --> src/future.rs:92:8
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn set_ok(&mut self, val: T) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_err`
[INFO] [stderr]   --> src/future.rs:97:8
[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: associated function is never used: `promised`
[INFO] [stderr]    --> src/future.rs:112:12
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn promised() -> (Future<T, E>, Promise<T, E>) {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_val`
[INFO] [stderr]    --> src/future.rs:119:12
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn from_val(val: T) -> Future<T, E> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_err`
[INFO] [stderr]    --> src/future.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn from_err(err: E) -> Future<T, E> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/future.rs:128:8
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Future<T, E> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_promised`
[INFO] [stderr]    --> src/future.rs:135:12
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn is_promised(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_ok`
[INFO] [stderr]    --> src/future.rs:141:12
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_ok(&self) -> bool {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_err`
[INFO] [stderr]    --> src/future.rs:146:12
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn is_err(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `err`
[INFO] [stderr]    --> src/future.rs:152:12
[INFO] [stderr]     |
[INFO] [stderr] 152 |     pub fn err(self) -> Option<E> {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `ok`
[INFO] [stderr]    --> src/future.rs:160:12
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn ok(self) -> Option<T> {
[INFO] [stderr]     |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unwrap_err`
[INFO] [stderr]    --> src/future.rs:169:12
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn unwrap_err(self) -> E {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unwrap`
[INFO] [stderr]    --> src/future.rs:177:12
[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: associated function is never used: `new`
[INFO] [stderr]    --> src/future.rs:195:8
[INFO] [stderr]     |
[INFO] [stderr] 195 |     fn new(inner: Rc<RefCell<FutureInner<T, E>>>) -> Promise<T, E> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `resolve`
[INFO] [stderr]    --> src/future.rs:201:12
[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: associated function is never used: `expect`
[INFO] [stderr]   --> src/future.rs:50:8
[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 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/urchin-bc964f83a260981b
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test future::test::future_promise_ok ... ok
[INFO] [stdout] test future::test::future_unwrap_err ... ok
[INFO] [stdout] test future::test::future_unwrap ... ok
[INFO] [stdout] test future::test::future_err ... ok
[INFO] [stdout] test future::test::future_promise_err ... ok
[INFO] [stdout] test future::test::future_ok ... ok
[INFO] [stdout] test future::test::future_err_unwrap ... ok
[INFO] [stdout] test future::test::future_promised_unwrap_err ... ok
[INFO] [stdout] test future::test::future_promised_unwrap ... ok
[INFO] [stderr]    Doc-tests urchin
[INFO] [stdout] test future::test::future_ok_unwrap_err ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ad71e98aeeb5bbe3c8ae28ecabd73ca9a70b0d17009823ae5d8a01e8aeb3f9cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad71e98aeeb5bbe3c8ae28ecabd73ca9a70b0d17009823ae5d8a01e8aeb3f9cd", kill_on_drop: false }`
[INFO] [stdout] ad71e98aeeb5bbe3c8ae28ecabd73ca9a70b0d17009823ae5d8a01e8aeb3f9cd