[INFO] cloning repository https://github.com/scottwillmoore/rust-primer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scottwillmoore/rust-primer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscottwillmoore%2Frust-primer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscottwillmoore%2Frust-primer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3987f1a197201a58362beba79573dd2edd187748 [INFO] checking scottwillmoore/rust-primer against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscottwillmoore%2Frust-primer" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/scottwillmoore/rust-primer on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/scottwillmoore/rust-primer [INFO] finished tweaking git repo https://github.com/scottwillmoore/rust-primer [INFO] tweaked toml for git repo https://github.com/scottwillmoore/rust-primer written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/scottwillmoore/rust-primer 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded serde_derive_internals v0.21.0 [INFO] [stderr] Downloaded serde_derive v1.0.33 [INFO] [stderr] Downloaded serde v1.0.33 [INFO] [stderr] Downloaded regex-syntax v0.5.3 [INFO] [stderr] Downloaded syn v0.12.14 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 027436f2de2b1fcd64cc760e18fed9daf63b0b15dfe6bc611c08f329257163f6 [INFO] running `Command { std: "docker" "start" "-a" "027436f2de2b1fcd64cc760e18fed9daf63b0b15dfe6bc611c08f329257163f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "027436f2de2b1fcd64cc760e18fed9daf63b0b15dfe6bc611c08f329257163f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "027436f2de2b1fcd64cc760e18fed9daf63b0b15dfe6bc611c08f329257163f6", kill_on_drop: false }` [INFO] [stdout] 027436f2de2b1fcd64cc760e18fed9daf63b0b15dfe6bc611c08f329257163f6 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1b4efd060fb8a22b9bdd424aba56d2f9c13553dd15d35e4156634ad5bdb8887b [INFO] running `Command { std: "docker" "start" "-a" "1b4efd060fb8a22b9bdd424aba56d2f9c13553dd15d35e4156634ad5bdb8887b", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking libc v0.2.39 [INFO] [stderr] Compiling regex v0.2.10 [INFO] [stderr] Checking ucd-util v0.1.1 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Checking serde v1.0.33 [INFO] [stderr] Compiling proc-macro2 v0.2.3 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking regex-syntax v0.5.3 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Compiling quote v0.4.2 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Compiling syn v0.12.14 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Compiling serde_derive_internals v0.21.0 [INFO] [stderr] Compiling serde_derive v1.0.33 [INFO] [stderr] Checking docopt v0.8.3 [INFO] [stderr] Checking primer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(iterator_step_by)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(iterator_step_by)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:36:38 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn iter<'a>(&'a self) -> Box + 'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 36 | pub fn iter<'a>(&'a self) -> Box + 'a> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:36:38 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn iter<'a>(&'a self) -> Box + 'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 36 | pub fn iter<'a>(&'a self) -> Box + 'a> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `flag_count`, `flag_method`, and `flag_format` are never read [INFO] [stdout] --> src/main.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 24 | struct Args { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 25 | flag_bound: Option, [INFO] [stdout] 26 | flag_count: Option, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 27 | flag_method: Method, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 28 | flag_format: Format, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `flag_count`, `flag_method`, and `flag_format` are never read [INFO] [stdout] --> src/main.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 24 | struct Args { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 25 | flag_bound: Option, [INFO] [stdout] 26 | flag_count: Option, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 27 | flag_method: Method, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 28 | flag_format: Format, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.68s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.14 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "1b4efd060fb8a22b9bdd424aba56d2f9c13553dd15d35e4156634ad5bdb8887b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b4efd060fb8a22b9bdd424aba56d2f9c13553dd15d35e4156634ad5bdb8887b", kill_on_drop: false }` [INFO] [stdout] 1b4efd060fb8a22b9bdd424aba56d2f9c13553dd15d35e4156634ad5bdb8887b