[INFO] fetching crate libgitdit 0.5.0...
[INFO] checking libgitdit-0.5.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate libgitdit 0.5.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate libgitdit 0.5.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libgitdit 0.5.0
[INFO] finished tweaking crates.io crate libgitdit 0.5.0
[INFO] tweaked toml for crates.io crate libgitdit 0.5.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding git2 v0.17.2 (available: v0.19.0)
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[INFO] [stderr]       Adding libgit2-sys v0.15.2+1.6.4 (available: v0.17.0+1.8.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af076db88f2d8e73712537c2a5865a0463104461fa3fb77029cd25c51add5843
[INFO] running `Command { std: "docker" "start" "-a" "af076db88f2d8e73712537c2a5865a0463104461fa3fb77029cd25c51add5843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af076db88f2d8e73712537c2a5865a0463104461fa3fb77029cd25c51add5843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af076db88f2d8e73712537c2a5865a0463104461fa3fb77029cd25c51add5843", kill_on_drop: false }`
[INFO] [stdout] af076db88f2d8e73712537c2a5865a0463104461fa3fb77029cd25c51add5843
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 661357eca40d33fda14ff546c741f9bee98c69437bc1782ae8b83d290b9f1543
[INFO] running `Command { std: "docker" "start" "-a" "661357eca40d33fda14ff546c741f9bee98c69437bc1782ae8b83d290b9f1543", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking gimli v0.31.0
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking tinyvec v1.8.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking object v0.36.4
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]    Compiling cc v1.1.21
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]    Compiling libz-sys v1.1.20
[INFO] [stderr]    Compiling openssl-sys v0.9.103
[INFO] [stderr]    Compiling libssh2-sys v0.3.0
[INFO] [stderr]    Compiling libgit2-sys v0.15.2+1.6.4
[INFO] [stderr]     Checking addr2line v0.24.1
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking git2 v0.17.2
[INFO] [stderr]     Checking libgitdit v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/repository.rs:56:73
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn issue_with_message<'a>(&'a self, message: &Commit<'a>) -> Result<Issue>;
[INFO] [stdout]    |                           -- lifetime `'a` declared here                ^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/repository.rs:142:73
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn issue_with_message<'a>(&'a self, message: &Commit<'a>) -> Result<Issue> {
[INFO] [stdout]     |                           -- lifetime `'a` declared here                ^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/repository.rs:56:73
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn issue_with_message<'a>(&'a self, message: &Commit<'a>) -> Result<Issue>;
[INFO] [stdout]    |                           -- lifetime `'a` declared here                ^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/repository.rs:142:73
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn issue_with_message<'a>(&'a self, message: &Commit<'a>) -> Result<Issue> {
[INFO] [stdout]     |                           -- lifetime `'a` declared here                ^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/issue.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |                 messages.revwalk.simplify_first_parent();
[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] 252 |                 let _ = messages.revwalk.simplify_first_parent();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/issue.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 let _ = messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/iter.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |             self.0.revwalk.reset();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 172 |             let _ = self.0.revwalk.reset();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/repository.rs:197:17
[INFO] [stdout]     |
[INFO] [stdout] 197 |                 messages.revwalk.simplify_first_parent();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 197 |                 let _ = messages.revwalk.simplify_first_parent();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/repository.rs:198:17
[INFO] [stdout]     |
[INFO] [stdout] 198 |                 messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 198 |                 let _ = messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/issue.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |                 messages.revwalk.simplify_first_parent();
[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] 252 |                 let _ = messages.revwalk.simplify_first_parent();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/issue.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 let _ = messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/iter.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |             self.0.revwalk.reset();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 172 |             let _ = self.0.revwalk.reset();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/repository.rs:197:17
[INFO] [stdout]     |
[INFO] [stdout] 197 |                 messages.revwalk.simplify_first_parent();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 197 |                 let _ = messages.revwalk.simplify_first_parent();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/repository.rs:198:17
[INFO] [stdout]     |
[INFO] [stdout] 198 |                 messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 198 |                 let _ = messages.revwalk.set_sorting(git2::Sort::TOPOLOGICAL);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.94s
[INFO] running `Command { std: "docker" "inspect" "661357eca40d33fda14ff546c741f9bee98c69437bc1782ae8b83d290b9f1543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "661357eca40d33fda14ff546c741f9bee98c69437bc1782ae8b83d290b9f1543", kill_on_drop: false }`
[INFO] [stdout] 661357eca40d33fda14ff546c741f9bee98c69437bc1782ae8b83d290b9f1543