[INFO] cloning repository https://github.com/gitdunamis/rust-initial-learnings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gitdunamis/rust-initial-learnings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitdunamis%2Frust-initial-learnings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitdunamis%2Frust-initial-learnings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f2a63c826d7259c4c2a46d5b847c3804517ce4af [INFO] checking gitdunamis/rust-initial-learnings against master#c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3 for pr-141352 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgitdunamis%2Frust-initial-learnings" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/gitdunamis/rust-initial-learnings on toolchain c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/gitdunamis/rust-initial-learnings [INFO] finished tweaking git repo https://github.com/gitdunamis/rust-initial-learnings [INFO] tweaked toml for git repo https://github.com/gitdunamis/rust-initial-learnings written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/gitdunamis/rust-initial-learnings already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] warning: /workspace/builds/worker-7-tc1/source/Cargo.toml: unused manifest key: edition [INFO] [stderr] warning: /workspace/builds/worker-7-tc1/source/Cargo.toml: unused manifest key: name [INFO] [stderr] warning: /workspace/builds/worker-7-tc1/source/Cargo.toml: unused manifest key: version [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 09b60abaed8ffdf7d5a071f7240be83f19dcdf5517e1a32e64899bb72d6b45e4 [INFO] running `Command { std: "docker" "start" "-a" "09b60abaed8ffdf7d5a071f7240be83f19dcdf5517e1a32e64899bb72d6b45e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "09b60abaed8ffdf7d5a071f7240be83f19dcdf5517e1a32e64899bb72d6b45e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "09b60abaed8ffdf7d5a071f7240be83f19dcdf5517e1a32e64899bb72d6b45e4", kill_on_drop: false }` [INFO] [stdout] 09b60abaed8ffdf7d5a071f7240be83f19dcdf5517e1a32e64899bb72d6b45e4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8322bf52c8e4453db502e7409a67e3ef641e216f8b620280406cd093da325c81 [INFO] running `Command { std: "docker" "start" "-a" "8322bf52c8e4453db502e7409a67e3ef641e216f8b620280406cd093da325c81", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: edition [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: name [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: version [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking conslist v0.1.0 (/opt/rustwide/workdir/conslist) [INFO] [stderr] Checking macros v0.1.0 (/opt/rustwide/workdir/macros) [INFO] [stderr] Checking traitobjects v0.1.0 (/opt/rustwide/workdir/traitobjects) [INFO] [stderr] Checking webserver v0.1.0 (/opt/rustwide/workdir/webserver) [INFO] [stderr] Checking advancedtraits v0.1.0 (/opt/rustwide/workdir/advancedtraits) [INFO] [stderr] Checking pointers v0.1.0 (/opt/rustwide/workdir/pointers) [INFO] [stderr] Checking limittracker v0.1.0 (/opt/rustwide/workdir/limittracker) [INFO] [stderr] Checking unsafe_rust v0.1.0 (/opt/rustwide/workdir/unsafe_rust) [INFO] [stderr] Checking concurrency v0.1.0 (/opt/rustwide/workdir/concurrency) [INFO] [stdout] warning: unused import: `MutexGuard` [INFO] [stdout] --> webserver/src/lib.rs:1:29 [INFO] [stdout] | [INFO] [stdout] 1 | use std::sync::{Arc, Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> unsafe_rust/src/main.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | pub extern fn from_rust() -> *const u8 { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Messanger` is never used [INFO] [stdout] --> limittracker/src/lib.rs:1:7 [INFO] [stdout] | [INFO] [stdout] 1 | trait Messanger { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `LimitTracker` is never constructed [INFO] [stdout] --> limittracker/src/lib.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct LimitTracker<'a, T: Messanger> { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking list v0.1.0 (/opt/rustwide/workdir/list) [INFO] [stdout] warning: associated items `new` and `set_value` are never used [INFO] [stdout] --> limittracker/src/lib.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 11 | impl<'a, T> LimitTracker<'a, T> where T: Messanger{ [INFO] [stdout] | -------------------------------------------------- associated items in this implementation [INFO] [stdout] 12 | fn new(messanger: &'a T, max: usize) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 16 | fn set_value(&mut self, new_value: usize) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Unsafe` is never used [INFO] [stdout] --> unsafe_rust/src/main.rs:49:14 [INFO] [stdout] | [INFO] [stdout] 49 | unsafe trait Unsafe { } [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> unsafe_rust/src/main.rs:24:33 [INFO] [stdout] | [INFO] [stdout] 24 | println!("New COUNTER: {COUNTER}") [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `size` is never read [INFO] [stdout] --> webserver/src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct ThreadPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 7 | size: usize, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> pointers/src/main.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut x = 5; [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 import: `self` [INFO] [stdout] --> list/src/main.rs:3:37 [INFO] [stdout] | [INFO] [stdout] 3 | use conslist::ConsList::{Cons, Nil, self}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `three` [INFO] [stdout] --> list/src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let three = Cons(3, Rc::clone(&tree_one)); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_three` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> list/src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let four = Cons(4, Rc::clone(&tree_one)); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> list/src/main.rs:3:37 [INFO] [stdout] | [INFO] [stdout] 3 | use conslist::ConsList::{Cons, Nil, self}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> unsafe_rust/src/main.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | pub extern fn from_rust() -> *const u8 { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> pointers/src/main.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut x = 5; [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: `three` [INFO] [stdout] --> list/src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let three = Cons(3, Rc::clone(&tree_one)); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_three` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> list/src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let four = Cons(4, Rc::clone(&tree_one)); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Unsafe` is never used [INFO] [stdout] --> unsafe_rust/src/main.rs:49:14 [INFO] [stdout] | [INFO] [stdout] 49 | unsafe trait Unsafe { } [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> unsafe_rust/src/main.rs:24:33 [INFO] [stdout] | [INFO] [stdout] 24 | println!("New COUNTER: {COUNTER}") [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `MutexGuard` [INFO] [stdout] --> webserver/src/lib.rs:1:29 [INFO] [stdout] | [INFO] [stdout] 1 | use std::sync::{Arc, Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0373]: closure may outlive the current function, but it borrows `stream`, which is owned by the current function [INFO] [stdout] --> webserver/src/main.rs:17:22 [INFO] [stdout] | [INFO] [stdout] 17 | pool.execute(|| handle(&mut stream)); [INFO] [stdout] | ^^ ------ `stream` is borrowed here [INFO] [stdout] | | [INFO] [stdout] | may outlive borrowed value `stream` [INFO] [stdout] | [INFO] [stdout] note: function requires argument type to outlive `'static` [INFO] [stdout] --> webserver/src/main.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | pool.execute(|| handle(&mut stream)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: to force the closure to take ownership of `stream` (and any other referenced variables), use the `move` keyword [INFO] [stdout] | [INFO] [stdout] 17 | pool.execute(move || handle(&mut stream)); [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0373]: closure may outlive the current function, but it borrows `stream`, which is owned by the current function [INFO] [stdout] --> webserver/src/main.rs:17:22 [INFO] [stdout] | [INFO] [stdout] 17 | pool.execute(|| handle(&mut stream)); [INFO] [stdout] | ^^ ------ `stream` is borrowed here [INFO] [stdout] | | [INFO] [stdout] | may outlive borrowed value `stream` [INFO] [stdout] | [INFO] [stdout] note: function requires argument type to outlive `'static` [INFO] [stdout] --> webserver/src/main.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | pool.execute(|| handle(&mut stream)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: to force the closure to take ownership of `stream` (and any other referenced variables), use the `move` keyword [INFO] [stdout] | [INFO] [stdout] 17 | pool.execute(move || handle(&mut stream)); [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0373`. [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0373`. [INFO] [stdout] [INFO] [stderr] error: could not compile `webserver` (bin "webserver" test) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `webserver` (bin "webserver") due to 1 previous error [INFO] [stdout] warning: field `size` is never read [INFO] [stdout] --> webserver/src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct ThreadPool { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 7 | size: usize, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "8322bf52c8e4453db502e7409a67e3ef641e216f8b620280406cd093da325c81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8322bf52c8e4453db502e7409a67e3ef641e216f8b620280406cd093da325c81", kill_on_drop: false }` [INFO] [stdout] 8322bf52c8e4453db502e7409a67e3ef641e216f8b620280406cd093da325c81