[INFO] fetching crate slice-group-by 0.3.1... [INFO] checking slice-group-by-0.3.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate slice-group-by 0.3.1 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate slice-group-by 0.3.1 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate slice-group-by 0.3.1 [INFO] finished tweaking crates.io crate slice-group-by 0.3.1 [INFO] tweaked toml for crates.io crate slice-group-by 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 20 packages to latest compatible versions [INFO] [stderr] Adding autocfg v0.1.8 (available: v1.4.0) [INFO] [stderr] Adding bitflags v1.3.2 (available: v2.6.0) [INFO] [stderr] Adding cloudabi v0.0.3 (available: v0.1.0) [INFO] [stderr] Adding rand v0.6.5 (available: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (available: v0.3.1) [INFO] [stderr] Adding rand_core v0.3.1 (available: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (available: v0.6.4) [INFO] [stderr] Adding rand_hc v0.1.0 (available: v0.3.2) [INFO] [stderr] Adding rand_isaac v0.1.1 (available: v0.3.0) [INFO] [stderr] Adding rand_jitter v0.1.4 (available: v0.4.0) [INFO] [stderr] Adding rand_os v0.1.3 (available: v0.2.2) [INFO] [stderr] Adding rand_pcg v0.1.2 (available: v0.3.1) [INFO] [stderr] Adding rand_xorshift v0.1.1 (available: v0.3.0) [INFO] [stderr] Adding rdrand v0.4.0 (available: v0.8.3) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1cfd2003bd46d497022f38d29f40cc15ae427d22984b5de0aad933699f2fa74c [INFO] running `Command { std: "docker" "start" "-a" "1cfd2003bd46d497022f38d29f40cc15ae427d22984b5de0aad933699f2fa74c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1cfd2003bd46d497022f38d29f40cc15ae427d22984b5de0aad933699f2fa74c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1cfd2003bd46d497022f38d29f40cc15ae427d22984b5de0aad933699f2fa74c", kill_on_drop: false }` [INFO] [stdout] 1cfd2003bd46d497022f38d29f40cc15ae427d22984b5de0aad933699f2fa74c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d3fe2ee6616691f417a88cf532cce01ddc29fb69ce57ae1ecd49588a963d09ed [INFO] running `Command { std: "docker" "start" "-a" "d3fe2ee6616691f417a88cf532cce01ddc29fb69ce57ae1ecd49588a963d09ed", kill_on_drop: false }` [INFO] [stderr] Checking slice-group-by v0.3.1 (/opt/rustwide/workdir) [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/linear_str_group/linear_str_group.rs:28:40 [INFO] [stdout] | [INFO] [stdout] 27 | impl<'a> LinearStrGroupMut<'a> { [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] 28 | pub fn new(string: &'a mut str) -> LinearStrGroupMut { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand v0.6.5 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/linear_str_group/linear_str_group.rs:28:40 [INFO] [stdout] | [INFO] [stdout] 27 | impl<'a> LinearStrGroupMut<'a> { [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] 28 | pub fn new(string: &'a mut str) -> LinearStrGroupMut { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ 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: field `0` is never read [INFO] [stdout] --> src/linear_group/mod.rs:15:15 [INFO] [stdout] | [INFO] [stdout] 15 | Valid(i32), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Guard` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 15 | Valid(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/linear_group/mod.rs:16:17 [INFO] [stdout] | [INFO] [stdout] 16 | Invalid(i32), [INFO] [stdout] | ------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Guard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 | Invalid(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/binary_group/mod.rs:15:15 [INFO] [stdout] | [INFO] [stdout] 15 | Valid(i32), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Guard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 15 | Valid(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/binary_group/mod.rs:16:17 [INFO] [stdout] | [INFO] [stdout] 16 | Invalid(i32), [INFO] [stdout] | ------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Guard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 | Invalid(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/exponential_group/mod.rs:15:15 [INFO] [stdout] | [INFO] [stdout] 15 | Valid(i32), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Guard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 15 | Valid(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/exponential_group/mod.rs:16:17 [INFO] [stdout] | [INFO] [stdout] 16 | Invalid(i32), [INFO] [stdout] | ------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Guard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 | Invalid(()), [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 1.59s [INFO] running `Command { std: "docker" "inspect" "d3fe2ee6616691f417a88cf532cce01ddc29fb69ce57ae1ecd49588a963d09ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d3fe2ee6616691f417a88cf532cce01ddc29fb69ce57ae1ecd49588a963d09ed", kill_on_drop: false }` [INFO] [stdout] d3fe2ee6616691f417a88cf532cce01ddc29fb69ce57ae1ecd49588a963d09ed