[INFO] fetching crate msc 0.5.4... [INFO] testing msc-0.5.4 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8 [INFO] extracting crate msc 0.5.4 into /workspace/builds/worker-6-tc1/source [INFO] started tweaking crates.io crate msc 0.5.4 [INFO] finished tweaking crates.io crate msc 0.5.4 [INFO] tweaked toml for crates.io crate msc 0.5.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate msc 0.5.4 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 4 packages to latest compatible versions [INFO] [stderr] Adding nom v4.2.3 (available: v8.0.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded nom v4.2.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 85c650e5d9a224c29c5e393dd99c82989380d0cfff27d83233b6da1f558188f1 [INFO] running `Command { std: "docker" "start" "-a" "85c650e5d9a224c29c5e393dd99c82989380d0cfff27d83233b6da1f558188f1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "85c650e5d9a224c29c5e393dd99c82989380d0cfff27d83233b6da1f558188f1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85c650e5d9a224c29c5e393dd99c82989380d0cfff27d83233b6da1f558188f1", kill_on_drop: false }` [INFO] [stdout] 85c650e5d9a224c29c5e393dd99c82989380d0cfff27d83233b6da1f558188f1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2881a1729c8d791f97e5f88e7d895a237784cdfe16d0c3d2821df1ada0bd4067 [INFO] running `Command { std: "docker" "start" "-a" "2881a1729c8d791f97e5f88e7d895a237784cdfe16d0c3d2821df1ada0bd4067", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling memchr v2.7.6 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Compiling msc v0.5.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/mscb_file/writer.rs:346:28 [INFO] [stdout] | [INFO] [stdout] 346 | impl WriteImpl for &mut Iterator where T: WriteImpl, { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 346 | impl WriteImpl for &mut dyn Iterator where T: WriteImpl, { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:201:17 [INFO] [stdout] | [INFO] [stdout] 201 | pub fn iter(&self) -> std::slice::Iter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 201 | pub fn iter(&self) -> std::slice::Iter<'_, Command> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/mscb_file/mod.rs:31:17 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn iter(&self) -> std::slice::Iter