[INFO] cloning repository https://github.com/ericbreyer/serenity [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ericbreyer/serenity" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericbreyer%2Fserenity", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericbreyer%2Fserenity'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2dae977066a6c7dd7007a18ea8aced6cb03c0ce7 [INFO] checking ericbreyer/serenity against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericbreyer%2Fserenity" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ericbreyer/serenity on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ericbreyer/serenity [INFO] finished tweaking git repo https://github.com/ericbreyer/serenity [INFO] tweaked toml for git repo https://github.com/ericbreyer/serenity written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ericbreyer/serenity 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pow_of_2 v0.1.2 [INFO] [stderr] Downloaded pinvec v0.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cb0bab809162458a129074eb4d6365f755e02ee3ee6b7d6bae877c7bb5453997 [INFO] running `Command { std: "docker" "start" "-a" "cb0bab809162458a129074eb4d6365f755e02ee3ee6b7d6bae877c7bb5453997", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cb0bab809162458a129074eb4d6365f755e02ee3ee6b7d6bae877c7bb5453997", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb0bab809162458a129074eb4d6365f755e02ee3ee6b7d6bae877c7bb5453997", kill_on_drop: false }` [INFO] [stdout] cb0bab809162458a129074eb4d6365f755e02ee3ee6b7d6bae877c7bb5453997 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8a6402e2e97d7a490ec9b365238dfc936af7040f911c6f60abeae79b484d3a03 [INFO] running `Command { std: "docker" "start" "-a" "8a6402e2e97d7a490ec9b365238dfc936af7040f911c6f60abeae79b484d3a03", kill_on_drop: false }` [INFO] [stderr] Checking smallvec v1.13.1 [INFO] [stderr] Checking either v1.9.0 [INFO] [stderr] Compiling winnow v0.5.34 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Compiling thiserror v1.0.57 [INFO] [stderr] Checking itoa v1.0.10 [INFO] [stderr] Compiling indexmap v2.1.0 [INFO] [stderr] Checking deranged v0.3.11 [INFO] [stderr] Checking thread_local v1.1.7 [INFO] [stderr] Checking num-conv v0.1.0 [INFO] [stderr] Compiling syn v2.0.48 [INFO] [stderr] Checking crossbeam-channel v0.5.11 [INFO] [stderr] Checking pow_of_2 v0.1.2 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking pinvec v0.1.0 [INFO] [stderr] Checking rayon v1.8.1 [INFO] [stderr] Checking tracing-log v0.2.0 [INFO] [stderr] Checking nibble_vec v0.1.0 [INFO] [stderr] Checking tracing-subscriber v0.3.18 [INFO] [stderr] Checking radix_trie v0.2.1 [INFO] [stderr] Checking time v0.3.34 [INFO] [stderr] Compiling toml_edit v0.21.0 [INFO] [stderr] Checking fid-rs v0.1.1 [INFO] [stderr] Checking louds-rs v0.4.0 [INFO] [stderr] Checking trie-rs v0.1.1 [INFO] [stderr] Compiling test-case-core v3.3.1 [INFO] [stderr] Compiling proc-macro-crate v3.1.0 [INFO] [stderr] Compiling thiserror-impl v1.0.57 [INFO] [stderr] Compiling num_enum_derive v0.7.2 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Compiling test-case-macros v3.3.1 [INFO] [stderr] Checking test-case v3.3.1 [INFO] [stderr] Checking tracing-appender v0.2.3 [INFO] [stderr] Checking num_enum v0.7.2 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking serenity v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `tracing` is imported redundantly [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use tracing; [INFO] [stdout] | ^^^^^^^ the item `tracing` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tracing_subscriber` is imported redundantly [INFO] [stdout] --> src/main.rs:5:27 [INFO] [stdout] | [INFO] [stdout] 5 | use tracing_subscriber::{ self, fmt::format::FmtSpan, layer::SubscriberExt, Layer }; [INFO] [stdout] | ^^^^ the item `tracing_subscriber` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `RefCell`, `rc::Rc` [INFO] [stdout] --> src/parser/serenity_parser/mod.rs:4:45 [INFO] [stdout] | [INFO] [stdout] 4 | array, borrow::BorrowMut, cell::{ Cell, RefCell }, collections::HashMap, num::ParseIntError, rc::Rc, sync::{atomic::{ AtomicUsize, Or... [INFO] [stdout] | ^^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `borrow::Borrow`, `cell::RefCell` [INFO] [stdout] --> src/typing/mod.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc, sync::{Arc, Mutex}}; [INFO] [stdout] | ^^^^^^^^^^^^^^ ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tracing` is imported redundantly [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use tracing; [INFO] [stdout] | ^^^^^^^ the item `tracing` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tracing_subscriber` is imported redundantly [INFO] [stdout] --> src/main.rs:5:27 [INFO] [stdout] | [INFO] [stdout] 5 | use tracing_subscriber::{ self, fmt::format::FmtSpan, layer::SubscriberExt, Layer }; [INFO] [stdout] | ^^^^ the item `tracing_subscriber` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `RefCell`, `rc::Rc` [INFO] [stdout] --> src/parser/serenity_parser/mod.rs:4:45 [INFO] [stdout] | [INFO] [stdout] 4 | array, borrow::BorrowMut, cell::{ Cell, RefCell }, collections::HashMap, num::ParseIntError, rc::Rc, sync::{atomic::{ AtomicUsize, Or... [INFO] [stdout] | ^^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `borrow::Borrow`, `cell::RefCell` [INFO] [stdout] --> src/typing/mod.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc, sync::{Arc, Mutex}}; [INFO] [stdout] | ^^^^^^^^^^^^^^ ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vm` [INFO] [stdout] --> src/vm/mod.rs:83:17 [INFO] [stdout] | [INFO] [stdout] 83 | fn clock_native(vm: &mut VM, _args: &[Word]) -> Value { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vm` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prog` [INFO] [stdout] --> src/main.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let prog = args[0].clone(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_prog` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `mutable` and `captured` are never read [INFO] [stdout] --> src/compiler/optimization_pass/mod.rs:288:5 [INFO] [stdout] | [INFO] [stdout] 285 | struct Local { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 288 | mutable: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 289 | captured: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/compiler/emit_pass/expressions.rs:793:9 [INFO] [stdout] | [INFO] [stdout] 793 | drop(temp); [INFO] [stdout] | ^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&MutexGuard<'_, HashMap>` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/compiler/type_check_pass/expressions.rs:608:9 [INFO] [stdout] | [INFO] [stdout] 608 | drop(temp); [INFO] [stdout] | ^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut MutexGuard<'_, HashMap>` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vm` [INFO] [stdout] --> src/vm/mod.rs:83:17 [INFO] [stdout] | [INFO] [stdout] 83 | fn clock_native(vm: &mut VM, _args: &[Word]) -> Value { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vm` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prog` [INFO] [stdout] --> src/main.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let prog = args[0].clone(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_prog` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `mutable` and `captured` are never read [INFO] [stdout] --> src/compiler/optimization_pass/mod.rs:288:5 [INFO] [stdout] | [INFO] [stdout] 285 | struct Local { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 288 | mutable: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 289 | captured: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/compiler/emit_pass/expressions.rs:793:9 [INFO] [stdout] | [INFO] [stdout] 793 | drop(temp); [INFO] [stdout] | ^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&MutexGuard<'_, HashMap>` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/compiler/type_check_pass/expressions.rs:608:9 [INFO] [stdout] | [INFO] [stdout] 608 | drop(temp); [INFO] [stdout] | ^^^^^----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut MutexGuard<'_, HashMap>` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.18s [INFO] running `Command { std: "docker" "inspect" "8a6402e2e97d7a490ec9b365238dfc936af7040f911c6f60abeae79b484d3a03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a6402e2e97d7a490ec9b365238dfc936af7040f911c6f60abeae79b484d3a03", kill_on_drop: false }` [INFO] [stdout] 8a6402e2e97d7a490ec9b365238dfc936af7040f911c6f60abeae79b484d3a03