[INFO] cloning repository https://github.com/mingyuan-f/rust_lab [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mingyuan-f/rust_lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmingyuan-f%2Frust_lab", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmingyuan-f%2Frust_lab'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5c1160becdc124579c43396173547247c2969ca8 [INFO] checking mingyuan-f/rust_lab against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmingyuan-f%2Frust_lab" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mingyuan-f/rust_lab on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mingyuan-f/rust_lab [INFO] finished tweaking git repo https://github.com/mingyuan-f/rust_lab [INFO] tweaked toml for git repo https://github.com/mingyuan-f/rust_lab written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/mingyuan-f/rust_lab already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded as-slice v0.1.5 [INFO] [stderr] Downloaded generic-array v0.13.3 [INFO] [stderr] Downloaded metatype v0.2.0 [INFO] [stderr] Downloaded build_id v0.2.1 [INFO] [stderr] Downloaded palaver v0.2.8 [INFO] [stderr] Downloaded relative v0.2.2 [INFO] [stderr] Downloaded serde_traitobject v0.2.7 [INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ab48857f7ce123d126ab21ec93eaf8f4764e333081539ba1f59540dbdf2e412d [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" "ab48857f7ce123d126ab21ec93eaf8f4764e333081539ba1f59540dbdf2e412d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ab48857f7ce123d126ab21ec93eaf8f4764e333081539ba1f59540dbdf2e412d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab48857f7ce123d126ab21ec93eaf8f4764e333081539ba1f59540dbdf2e412d", kill_on_drop: false }` [INFO] [stdout] ab48857f7ce123d126ab21ec93eaf8f4764e333081539ba1f59540dbdf2e412d [INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8917fff8217490f39f8d1b234f70007ab25bb6d71517c2461d4bd972e24415ba [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" "8917fff8217490f39f8d1b234f70007ab25bb6d71517c2461d4bd972e24415ba", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling build_id v0.2.1 [INFO] [stderr] Compiling relative v0.2.2 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking metatype v0.2.0 [INFO] [stderr] Checking hash32 v0.1.1 [INFO] [stderr] Checking twox-hash v1.6.0 [INFO] [stderr] Checking generic-array v0.12.4 [INFO] [stderr] Checking generic-array v0.13.3 [INFO] [stderr] Compiling procinfo v0.4.2 [INFO] [stderr] Checking nix v0.15.0 [INFO] [stderr] Checking as-slice v0.1.5 [INFO] [stderr] Checking heapless v0.5.6 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking palaver v0.2.8 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Checking serde v1.0.125 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking erased-serde v0.3.13 [INFO] [stderr] Checking serde_traitobject v0.2.7 [INFO] [stderr] Checking rust_lab v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: expected identifier, found `.` [INFO] [stdout] --> examples/serde.rs:145:21 [INFO] [stdout] | [INFO] [stdout] 145 | .get(std::any::type_name::()) [INFO] [stdout] | ^ expected identifier [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::any::Any` [INFO] [stdout] --> examples/serde.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::any::Any; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher` [INFO] [stdout] --> examples/serde.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::collections::hash_map::DefaultHasher; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Hash` [INFO] [stdout] --> examples/serde.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 7 | use std::hash::{Hash, Hasher}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `RwLock` [INFO] [stdout] --> examples/thread.rs:3:17 [INFO] [stdout] | [INFO] [stdout] 3 | use std::sync::{Arc, Mutex, RwLock}; [INFO] [stdout] | ^^^ ^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `MyStruct3` [INFO] [stdout] --> examples/vtable.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | struct MyStruct3; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Index` [INFO] [stdout] --> examples/reference_rule.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Index; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/thread.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let mut s = S { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `ref_value` [INFO] [stdout] --> examples/thread.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | ref_value: &'v Value, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `SyncLazy`, `SyncOnceCell` [INFO] [stdout] --> tests/generic_id_generator.rs:3:17 [INFO] [stdout] | [INFO] [stdout] 3 | use std::lazy::{SyncLazy, SyncOnceCell}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `AtomicUsize`, `Ordering` [INFO] [stdout] --> tests/generic_id_generator.rs:4:25 [INFO] [stdout] | [INFO] [stdout] 4 | use std::sync::atomic::{AtomicUsize, Ordering}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Condvar`, `Mutex` [INFO] [stdout] --> tests/generic_id_generator.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | use std::sync::{Condvar, Mutex}; [INFO] [stdout] | ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> examples/reference_rule.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let r1 = &s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> examples/reference_rule.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let r2 = &s; // no problem [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r3` [INFO] [stdout] --> examples/reference_rule.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let r3 = &mut s; // BIG PROBLEM [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> examples/reference_rule.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/reference_rule.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let mut v = vec![10, 9, 8]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> examples/trait_use.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let a: &dyn TA = &s; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time [INFO] [stdout] --> examples/serde.rs:152:22 [INFO] [stdout] | [INFO] [stdout] 112 | impl<'de, T: ?Sized + DeTrait> Deserialize<'de> for SerdeBox { [INFO] [stdout] | - this type parameter needs to be `std::marker::Sized` [INFO] [stdout] ... [INFO] [stdout] 152 | deserializer.deserialize_tuple(2, Visitor::new()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time [INFO] [stdout] | [INFO] [stdout] note: required because of the requirements on the impl of `_::_serde::de::Visitor<'de>` for ` as _::_serde::Deserialize<'de>>::deserialize::Visitor` [INFO] [stdout] --> examples/serde.rs:125:22 [INFO] [stdout] | [INFO] [stdout] 125 | impl<'de, T> serde::de::Visitor<'de> for Visitor { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time [INFO] [stdout] --> examples/serde.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 112 | impl<'de, T: ?Sized + DeTrait> Deserialize<'de> for SerdeBox { [INFO] [stdout] | - this type parameter needs to be `std::marker::Sized` [INFO] [stdout] ... [INFO] [stdout] 119 | struct Visitor(PhantomData); [INFO] [stdout] | - required by this bound in ` as _::_serde::Deserialize<'de>>::deserialize::Visitor` [INFO] [stdout] ... [INFO] [stdout] 152 | deserializer.deserialize_tuple(2, Visitor::new()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time [INFO] [stdout] | [INFO] [stdout] help: consider relaxing the implicit `Sized` restriction [INFO] [stdout] | [INFO] [stdout] 119 | struct Visitor(PhantomData); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time [INFO] [stdout] --> examples/serde.rs:152:43 [INFO] [stdout] | [INFO] [stdout] 112 | impl<'de, T: ?Sized + DeTrait> Deserialize<'de> for SerdeBox { [INFO] [stdout] | - this type parameter needs to be `std::marker::Sized` [INFO] [stdout] ... [INFO] [stdout] 121 | fn new() -> Self { [INFO] [stdout] | ---------------- required by ` as _::_serde::Deserialize<'de>>::deserialize::Visitor::::new` [INFO] [stdout] ... [INFO] [stdout] 152 | deserializer.deserialize_tuple(2, Visitor::new()) [INFO] [stdout] | ^^^^^^^^^^^^ doesn't have a size known at compile-time [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time [INFO] [stdout] --> examples/serde.rs:152:43 [INFO] [stdout] | [INFO] [stdout] 112 | impl<'de, T: ?Sized + DeTrait> Deserialize<'de> for SerdeBox { [INFO] [stdout] | - this type parameter needs to be `std::marker::Sized` [INFO] [stdout] ... [INFO] [stdout] 119 | struct Visitor(PhantomData); [INFO] [stdout] | - required by this bound in ` as _::_serde::Deserialize<'de>>::deserialize::Visitor` [INFO] [stdout] ... [INFO] [stdout] 152 | deserializer.deserialize_tuple(2, Visitor::new()) [INFO] [stdout] | ^^^^^^^ doesn't have a size known at compile-time [INFO] [stdout] | [INFO] [stdout] help: consider relaxing the implicit `Sized` restriction [INFO] [stdout] | [INFO] [stdout] 119 | struct Visitor(PhantomData); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `SerdeBox` in the current scope [INFO] [stdout] --> examples/serde.rs:164:38 [INFO] [stdout] | [INFO] [stdout] 98 | struct SerdeBox(Box); [INFO] [stdout] | ----------------------------------- function or associated item `new` not found for this [INFO] [stdout] ... [INFO] [stdout] 164 | SerdeBox::::new(Box::new(MyStruct { [INFO] [stdout] | ^^^ function or associated item not found in `SerdeBox` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `SerdeBox` in the current scope [INFO] [stdout] --> examples/serde.rs:168:38 [INFO] [stdout] | [INFO] [stdout] 98 | struct SerdeBox(Box); [INFO] [stdout] | ----------------------------------- function or associated item `new` not found for this [INFO] [stdout] ... [INFO] [stdout] 168 | SerdeBox::::new(Box::new(MyStruct1 { value: 2 })), [INFO] [stdout] | ^^^ function or associated item not found in `SerdeBox` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `SerdeBox` in the current scope [INFO] [stdout] --> examples/serde.rs:169:38 [INFO] [stdout] | [INFO] [stdout] 98 | struct SerdeBox(Box); [INFO] [stdout] | ----------------------------------- function or associated item `new` not found for this [INFO] [stdout] ... [INFO] [stdout] 169 | SerdeBox::::new(Box::new(MyStruct1 { value: 3 })), [INFO] [stdout] | ^^^ function or associated item not found in `SerdeBox` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `SerdeBox` in the current scope [INFO] [stdout] --> examples/serde.rs:170:38 [INFO] [stdout] | [INFO] [stdout] 98 | struct SerdeBox(Box); [INFO] [stdout] | ----------------------------------- function or associated item `new` not found for this [INFO] [stdout] ... [INFO] [stdout] 170 | SerdeBox::::new(Box::new(MyStruct { [INFO] [stdout] | ^^^ function or associated item not found in `SerdeBox` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Hasher` [INFO] [stdout] --> examples/serde.rs:7:23 [INFO] [stdout] | [INFO] [stdout] 7 | use std::hash::{Hash, Hasher}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 9 previous errors; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_lab` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::marker::PhantomData` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::marker::PhantomData; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> examples/trait.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | let a: Vec> = vec![Box::new(D {})]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `aa` [INFO] [stdout] --> examples/ownership.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | let aa = a.clone(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_aa` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `std::string::String` in the current scope [INFO] [stdout] --> src/main.rs:120:66 [INFO] [stdout] | [INFO] [stdout] 120 | let deserialized: Message = serde_json::from_str(&serialized.unwrap()).unwrap(); [INFO] [stdout] | ^^^^^^ method not found in `std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::marker::PhantomData` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::marker::PhantomData; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `std::string::String` in the current scope [INFO] [stdout] --> src/main.rs:120:66 [INFO] [stdout] | [INFO] [stdout] 120 | let deserialized: Message = serde_json::from_str(&serialized.unwrap()).unwrap(); [INFO] [stdout] | ^^^^^^ method not found in `std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "8917fff8217490f39f8d1b234f70007ab25bb6d71517c2461d4bd972e24415ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8917fff8217490f39f8d1b234f70007ab25bb6d71517c2461d4bd972e24415ba", kill_on_drop: false }` [INFO] [stdout] 8917fff8217490f39f8d1b234f70007ab25bb6d71517c2461d4bd972e24415ba