[INFO] fetching crate comn 0.1.1... [INFO] checking comn-0.1.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] extracting crate comn 0.1.1 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate comn 0.1.1 [INFO] finished tweaking crates.io crate comn 0.1.1 [INFO] tweaked toml for crates.io crate comn 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate comn 0.1.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 92 packages to latest compatible versions [INFO] [stderr] Adding clap v2.33.4 (available: v2.34.0) [INFO] [stderr] Adding ctor v0.1.26 (available: v0.4.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c65a4c42bd0688aefd0af7e66ccbe4a8c5edfecba92f03d0d94f29a887f08198 [INFO] running `Command { std: "docker" "start" "-a" "c65a4c42bd0688aefd0af7e66ccbe4a8c5edfecba92f03d0d94f29a887f08198", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c65a4c42bd0688aefd0af7e66ccbe4a8c5edfecba92f03d0d94f29a887f08198", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c65a4c42bd0688aefd0af7e66ccbe4a8c5edfecba92f03d0d94f29a887f08198", kill_on_drop: false }` [INFO] [stdout] c65a4c42bd0688aefd0af7e66ccbe4a8c5edfecba92f03d0d94f29a887f08198 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 93ec98d115c11d94442d0a7b504d7aae4e1f09c6bf43d28e74964b601d9d8171 [INFO] running `Command { std: "docker" "start" "-a" "93ec98d115c11d94442d0a7b504d7aae4e1f09c6bf43d28e74964b601d9d8171", kill_on_drop: false }` [INFO] [stderr] Checking futures-core v0.3.31 [INFO] [stderr] Compiling parking_lot_core v0.9.11 [INFO] [stderr] Checking futures-sink v0.3.31 [INFO] [stderr] Checking smallvec v1.15.1 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling lock_api v0.4.13 [INFO] [stderr] Compiling iana-time-zone v0.1.63 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking signal-hook-registry v1.4.5 [INFO] [stderr] Compiling futures-macro v0.3.31 [INFO] [stderr] Compiling tokio-macros v2.5.0 [INFO] [stderr] Compiling ctor v0.1.26 [INFO] [stderr] Checking futures-channel v0.3.31 [INFO] [stderr] Checking clap v2.33.4 [INFO] [stderr] Checking parking_lot v0.12.4 [INFO] [stderr] Checking tokio v1.45.1 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Compiling chrono v0.4.41 [INFO] [stderr] Compiling comn-pms v0.1.0 [INFO] [stderr] Checking futures-executor v0.3.31 [INFO] [stderr] Checking futures v0.3.31 [INFO] [stderr] Checking comn v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated module `std::intrinsics`: import this function via `std::mem` instead [INFO] [stdout] --> src/atomic.rs:2:22 [INFO] [stdout] | [INFO] [stdout] 2 | use std::intrinsics::transmute; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated module `std::intrinsics`: import this function via `std::mem` instead [INFO] [stdout] --> src/atomic.rs:2:22 [INFO] [stdout] | [INFO] [stdout] 2 | use std::intrinsics::transmute; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/flags.rs:33:22 [INFO] [stdout] | [INFO] [stdout] 33 | fn cmd_args_list(k: &'static str) -> &mut LinkedList { [INFO] [stdout] | ^^^^^^^ --------------------- the lifetime gets resolved as `'static` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'static` [INFO] [stdout] | [INFO] [stdout] 33 | fn cmd_args_list(k: &'static str) -> &'static mut LinkedList { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/flags.rs:33:22 [INFO] [stdout] | [INFO] [stdout] 33 | fn cmd_args_list(k: &'static str) -> &mut LinkedList { [INFO] [stdout] | ^^^^^^^ --------------------- the lifetime gets resolved as `'static` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'static` [INFO] [stdout] | [INFO] [stdout] 33 | fn cmd_args_list(k: &'static str) -> &'static mut LinkedList { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `from` that must be used [INFO] [stdout] --> src/flags.rs:215:13 [INFO] [stdout] | [INFO] [stdout] 215 | Box::::from(*ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 215 | let _ = Box::::from(*ptr); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `from` that must be used [INFO] [stdout] --> src/flags.rs:215:13 [INFO] [stdout] | [INFO] [stdout] 215 | Box::::from(*ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 215 | let _ = Box::::from(*ptr); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `wrapper` should have an upper camel case name [INFO] [stdout] --> tests/tokio.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | struct wrapper { [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Wrapper` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `x` should have an upper camel case name [INFO] [stdout] --> tests/test.rs:165:12 [INFO] [stdout] | [INFO] [stdout] 165 | struct x { [INFO] [stdout] | ^ help: convert the identifier to upper camel case (notice the capitalization): `X` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `a` should have an upper camel case name [INFO] [stdout] --> tests/test.rs:180:12 [INFO] [stdout] | [INFO] [stdout] 180 | struct a { [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `A` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep` [INFO] [stdout] --> tests/tokio.rs:33:17 [INFO] [stdout] | [INFO] [stdout] 33 | thread::sleep_ms(5000); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep` [INFO] [stdout] --> tests/tokio.rs:48:17 [INFO] [stdout] | [INFO] [stdout] 48 | thread::sleep_ms(5000); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep` [INFO] [stdout] --> tests/tokio.rs:63:17 [INFO] [stdout] | [INFO] [stdout] 63 | thread::sleep_ms(5000); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep` [INFO] [stdout] --> tests/tokio.rs:71:13 [INFO] [stdout] | [INFO] [stdout] 71 | thread::sleep_ms(3000); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/test.rs:281:13 [INFO] [stdout] | [INFO] [stdout] 281 | let mut y = &mut x; [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: struct `a` is never constructed [INFO] [stdout] --> tests/test.rs:180:12 [INFO] [stdout] | [INFO] [stdout] 180 | struct a { [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `x3` is never used [INFO] [stdout] --> tests/test.rs:185:8 [INFO] [stdout] | [INFO] [stdout] 185 | fn x3(c: &mut a, d: a) { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used [INFO] [stdout] --> tests/tokio.rs:75:5 [INFO] [stdout] | [INFO] [stdout] 75 | tokio::join!(h1, h2, h3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used [INFO] [stdout] --> tests/tokio.rs:75:5 [INFO] [stdout] | [INFO] [stdout] 75 | tokio::join!(h1, h2, h3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` in tuple element 2 that must be used [INFO] [stdout] --> tests/tokio.rs:75:5 [INFO] [stdout] | [INFO] [stdout] 75 | tokio::join!(h1, h2, h3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> tests/test.rs:222:9 [INFO] [stdout] | [INFO] [stdout] 222 | / thread::spawn(move || { [INFO] [stdout] 223 | | let sss3 = unsafe { &mut *(sss1 as *const _ as *mut String) }; [INFO] [stdout] 224 | | let sss4 = Box::leak(Box::new(format!("{1} {0}", i, 8))); [INFO] [stdout] 225 | | mem::swap(sss3, sss4); [INFO] [stdout] 226 | | }) [INFO] [stdout] 227 | | .join(); [INFO] [stdout] | |_______________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 222 | let _ = thread::spawn(move || { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell` [INFO] [stdout] --> tests/test.rs:223:33 [INFO] [stdout] | [INFO] [stdout] 223 | let sss3 = unsafe { &mut *(sss1 as *const _ as *mut String) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] = note: `#[deny(invalid_reference_casting)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `comn` (test "test") due to 1 previous error; 6 warnings emitted [INFO] running `Command { std: "docker" "inspect" "93ec98d115c11d94442d0a7b504d7aae4e1f09c6bf43d28e74964b601d9d8171", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "93ec98d115c11d94442d0a7b504d7aae4e1f09c6bf43d28e74964b601d9d8171", kill_on_drop: false }` [INFO] [stdout] 93ec98d115c11d94442d0a7b504d7aae4e1f09c6bf43d28e74964b601d9d8171