[INFO] cloning repository https://github.com/brson/piddle [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brson/piddle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fpiddle", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fpiddle'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 740fc3718248a4cfc59df356c26209eb5f321494 [INFO] checking brson/piddle/740fc3718248a4cfc59df356c26209eb5f321494 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrson%2Fpiddle" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/brson/piddle on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/brson/piddle [INFO] finished tweaking git repo https://github.com/brson/piddle [INFO] tweaked toml for git repo https://github.com/brson/piddle written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/brson/piddle 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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5e10d9a13739a4f51f4ee88cfcf35243dda4a0fb3c813479baf4a915266a14e0 [INFO] running `Command { std: "docker" "start" "-a" "5e10d9a13739a4f51f4ee88cfcf35243dda4a0fb3c813479baf4a915266a14e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5e10d9a13739a4f51f4ee88cfcf35243dda4a0fb3c813479baf4a915266a14e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e10d9a13739a4f51f4ee88cfcf35243dda4a0fb3c813479baf4a915266a14e0", kill_on_drop: false }` [INFO] [stdout] 5e10d9a13739a4f51f4ee88cfcf35243dda4a0fb3c813479baf4a915266a14e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b1f3dd4c5affab2001dc5c0f632bcbbf5671cc882758175a2193033e5b3d1bb7 [INFO] running `Command { std: "docker" "start" "-a" "b1f3dd4c5affab2001dc5c0f632bcbbf5671cc882758175a2193033e5b3d1bb7", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling libc v0.2.99 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Checking once_cell v1.8.0 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling minimal-lexical v0.1.2 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Checking nibble_vec v0.1.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking endian-type v0.1.2 [INFO] [stderr] Compiling anyhow v1.0.43 [INFO] [stderr] Checking unicode-segmentation v1.8.0 [INFO] [stderr] Checking utf8parse v0.2.0 [INFO] [stderr] Checking radix_trie v0.2.1 [INFO] [stderr] Compiling ahash v0.7.4 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling nom v7.0.0 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking nix v0.22.1 [INFO] [stderr] Checking fd-lock v3.0.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Checking hashbrown v0.11.2 [INFO] [stderr] Checking hecs v0.6.4 [INFO] [stderr] Checking string-interner v0.13.0 [INFO] [stderr] Compiling structopt-derive v0.4.15 [INFO] [stderr] Compiling thiserror-impl v1.0.26 [INFO] [stderr] Checking thiserror v1.0.26 [INFO] [stderr] Checking rustyline v9.0.0 [INFO] [stderr] Checking structopt v0.3.22 [INFO] [stderr] Checking piddle v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/compiler.rs:140:17 [INFO] [stdout] | [INFO] [stdout] 140 | drop(from_module_ctxt); [INFO] [stdout] | ^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 140 - drop(from_module_ctxt); [INFO] [stdout] 140 + let _ = from_module_ctxt; [INFO] [stdout] | [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.rs:166:5 [INFO] [stdout] | [INFO] [stdout] 166 | drop(from_module_ctxt); [INFO] [stdout] | ^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - drop(from_module_ctxt); [INFO] [stdout] 166 + let _ = from_module_ctxt; [INFO] [stdout] | [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.rs:173:17 [INFO] [stdout] | [INFO] [stdout] 173 | drop(from_module_ctxt); [INFO] [stdout] | ^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 173 - drop(from_module_ctxt); [INFO] [stdout] 173 + let _ = from_module_ctxt; [INFO] [stdout] | [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.rs:202:9 [INFO] [stdout] | [INFO] [stdout] 202 | drop(module_ctxt); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 202 - drop(module_ctxt); [INFO] [stdout] 202 + let _ = module_ctxt; [INFO] [stdout] | [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.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | drop(module_ctxt); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 224 - drop(module_ctxt); [INFO] [stdout] 224 + let _ = module_ctxt; [INFO] [stdout] | [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.rs:231:13 [INFO] [stdout] | [INFO] [stdout] 231 | drop(other_module_ctxt); [INFO] [stdout] | ^^^^^-----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 231 - drop(other_module_ctxt); [INFO] [stdout] 231 + let _ = other_module_ctxt; [INFO] [stdout] | [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.rs:246:9 [INFO] [stdout] | [INFO] [stdout] 246 | drop(other_module_ctxt); [INFO] [stdout] | ^^^^^-----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 246 - drop(other_module_ctxt); [INFO] [stdout] 246 + let _ = other_module_ctxt; [INFO] [stdout] | [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.rs:261:9 [INFO] [stdout] | [INFO] [stdout] 261 | drop(other_module_ctxt); [INFO] [stdout] | ^^^^^-----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 261 - drop(other_module_ctxt); [INFO] [stdout] 261 + let _ = other_module_ctxt; [INFO] [stdout] | [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.rs:140:17 [INFO] [stdout] | [INFO] [stdout] 140 | drop(from_module_ctxt); [INFO] [stdout] | ^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 140 - drop(from_module_ctxt); [INFO] [stdout] 140 + let _ = from_module_ctxt; [INFO] [stdout] | [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.rs:166:5 [INFO] [stdout] | [INFO] [stdout] 166 | drop(from_module_ctxt); [INFO] [stdout] | ^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - drop(from_module_ctxt); [INFO] [stdout] 166 + let _ = from_module_ctxt; [INFO] [stdout] | [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.rs:173:17 [INFO] [stdout] | [INFO] [stdout] 173 | drop(from_module_ctxt); [INFO] [stdout] | ^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 173 - drop(from_module_ctxt); [INFO] [stdout] 173 + let _ = from_module_ctxt; [INFO] [stdout] | [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.rs:202:9 [INFO] [stdout] | [INFO] [stdout] 202 | drop(module_ctxt); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 202 - drop(module_ctxt); [INFO] [stdout] 202 + let _ = module_ctxt; [INFO] [stdout] | [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.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | drop(module_ctxt); [INFO] [stdout] | ^^^^^-----------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 224 - drop(module_ctxt); [INFO] [stdout] 224 + let _ = module_ctxt; [INFO] [stdout] | [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.rs:231:13 [INFO] [stdout] | [INFO] [stdout] 231 | drop(other_module_ctxt); [INFO] [stdout] | ^^^^^-----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 231 - drop(other_module_ctxt); [INFO] [stdout] 231 + let _ = other_module_ctxt; [INFO] [stdout] | [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.rs:246:9 [INFO] [stdout] | [INFO] [stdout] 246 | drop(other_module_ctxt); [INFO] [stdout] | ^^^^^-----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 246 - drop(other_module_ctxt); [INFO] [stdout] 246 + let _ = other_module_ctxt; [INFO] [stdout] | [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.rs:261:9 [INFO] [stdout] | [INFO] [stdout] 261 | drop(other_module_ctxt); [INFO] [stdout] | ^^^^^-----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut ModuleContext` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 261 - drop(other_module_ctxt); [INFO] [stdout] 261 + let _ = other_module_ctxt; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.54s [INFO] running `Command { std: "docker" "inspect" "b1f3dd4c5affab2001dc5c0f632bcbbf5671cc882758175a2193033e5b3d1bb7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b1f3dd4c5affab2001dc5c0f632bcbbf5671cc882758175a2193033e5b3d1bb7", kill_on_drop: false }` [INFO] [stdout] b1f3dd4c5affab2001dc5c0f632bcbbf5671cc882758175a2193033e5b3d1bb7