[INFO] cloning repository https://github.com/lochbrunner/rust-hacks [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lochbrunner/rust-hacks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flochbrunner%2Frust-hacks", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flochbrunner%2Frust-hacks'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 04a14e80469215a2b365dd3d60ca86a6520cd2ad [INFO] testing lochbrunner/rust-hacks against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flochbrunner%2Frust-hacks" "/workspace/builds/worker-94/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-94/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lochbrunner/rust-hacks on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lochbrunner/rust-hacks [INFO] finished tweaking git repo https://github.com/lochbrunner/rust-hacks [INFO] tweaked toml for git repo https://github.com/lochbrunner/rust-hacks written to /workspace/builds/worker-94/source/Cargo.toml [INFO] crate git repo https://github.com/lochbrunner/rust-hacks already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8a90299707285804d25b7337d5d3e33b4bc8d23aa3e2581e4e2bd6bba84993a6 [INFO] running `Command { std: "docker" "start" "-a" "8a90299707285804d25b7337d5d3e33b4bc8d23aa3e2581e4e2bd6bba84993a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8a90299707285804d25b7337d5d3e33b4bc8d23aa3e2581e4e2bd6bba84993a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a90299707285804d25b7337d5d3e33b4bc8d23aa3e2581e4e2bd6bba84993a6", kill_on_drop: false }` [INFO] [stdout] 8a90299707285804d25b7337d5d3e33b4bc8d23aa3e2581e4e2bd6bba84993a6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8a80d8056716710047396b1a271688259dc2a71c70aed3df47371c6dcff156da [INFO] running `Command { std: "docker" "start" "-a" "8a80d8056716710047396b1a271688259dc2a71c70aed3df47371c6dcff156da", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rust-hacks v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `Filter`, `Map` [INFO] [stdout] --> src/sample_map.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | use std::iter::{Filter, Iterator, Map}; [INFO] [stdout] | ^^^^^^ ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/sample_map.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | type P = FnMut() -> S; [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> S` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/sample_map.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let s = self.s.iter().nth(0).unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/cross_join.rs:23:12 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn new(left_iter: L, samples: &'a [R]) -> CrossJoin<'a, R, L> { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/sample_map.rs:11:19 [INFO] [stdout] | [INFO] [stdout] 11 | pub(super) fn new(iter: I, f: F, s: &'a [S]) -> SampleMap<'a, I, F, S> { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias is never used: `P` [INFO] [stdout] --> src/sample_map.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | type P = FnMut() -> S; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.69s [INFO] running `Command { std: "docker" "inspect" "8a80d8056716710047396b1a271688259dc2a71c70aed3df47371c6dcff156da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a80d8056716710047396b1a271688259dc2a71c70aed3df47371c6dcff156da", kill_on_drop: false }` [INFO] [stdout] 8a80d8056716710047396b1a271688259dc2a71c70aed3df47371c6dcff156da [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 62881147518a2fc2ed3bebe0a4a26798baa13f32644a60148e74076f3c80617a [INFO] running `Command { std: "docker" "start" "-a" "62881147518a2fc2ed3bebe0a4a26798baa13f32644a60148e74076f3c80617a", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rust-hacks v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/count_calls.rs:21:18 [INFO] [stdout] | [INFO] [stdout] 21 | fn f(p: &mut FnMut() -> i32) { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> i32` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Filter`, `Map` [INFO] [stdout] --> src/sample_map.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | use std::iter::{Filter, Iterator, Map}; [INFO] [stdout] | ^^^^^^ ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/sample_map.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | type P = FnMut() -> S; [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> S` [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] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/sample_map.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let s = self.s.iter().nth(0).unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arg` [INFO] [stdout] --> src/move_in_map.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | fn foo(arg: A) -> i32 { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_arg` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `output` [INFO] [stdout] --> src/move_in_map.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | let output = inputs.into_iter().map(|item| foo(item)); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias is never used: `P` [INFO] [stdout] --> src/sample_map.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | type P = FnMut() -> S; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Map` that must be used [INFO] [stdout] --> src/cross_join.rs:120:9 [INFO] [stdout] | [INFO] [stdout] 120 | input.iter().map(|s| s); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.01s [INFO] running `Command { std: "docker" "inspect" "62881147518a2fc2ed3bebe0a4a26798baa13f32644a60148e74076f3c80617a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "62881147518a2fc2ed3bebe0a4a26798baa13f32644a60148e74076f3c80617a", kill_on_drop: false }` [INFO] [stdout] 62881147518a2fc2ed3bebe0a4a26798baa13f32644a60148e74076f3c80617a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 0dafdfbd686b1072470c8a45c9c7eca4468cd50ba7a9542c9783c0424eb955f1 [INFO] running `Command { std: "docker" "start" "-a" "0dafdfbd686b1072470c8a45c9c7eca4468cd50ba7a9542c9783c0424eb955f1", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/count_calls.rs:21:18 [INFO] [stderr] | [INFO] [stderr] 21 | fn f(p: &mut FnMut() -> i32) { [INFO] [stderr] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> i32` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Filter`, `Map` [INFO] [stderr] --> src/sample_map.rs:1:17 [INFO] [stderr] | [INFO] [stderr] 1 | use std::iter::{Filter, Iterator, Map}; [INFO] [stderr] | ^^^^^^ ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/sample_map.rs:16:13 [INFO] [stderr] | [INFO] [stderr] 16 | type P = FnMut() -> S; [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> S` [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/sample_map.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | let s = self.s.iter().nth(0).unwrap(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `arg` [INFO] [stderr] --> src/move_in_map.rs:6:12 [INFO] [stderr] | [INFO] [stderr] 6 | fn foo(arg: A) -> i32 { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_arg` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `output` [INFO] [stderr] --> src/move_in_map.rs:13:13 [INFO] [stderr] | [INFO] [stderr] 13 | let output = inputs.into_iter().map(|item| foo(item)); [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output` [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `P` [INFO] [stderr] --> src/sample_map.rs:16:1 [INFO] [stderr] | [INFO] [stderr] 16 | type P = FnMut() -> S; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Map` that must be used [INFO] [stderr] --> src/cross_join.rs:120:9 [INFO] [stderr] | [INFO] [stderr] 120 | input.iter().map(|s| s); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: iterators are lazy and do nothing unless consumed [INFO] [stderr] [INFO] [stderr] warning: `rust-hacks` (bin "rust-hacks" test) generated 8 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.24s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_hacks-be8357ba33982654) [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test count_calls::stackoverflow::test ... ok [INFO] [stdout] test learn_iter::specs_learn::sam_trait ... ok [INFO] [stdout] test cross_join::specs::cross_iter ... ok [INFO] [stdout] test learn_iter::specs_learn::sam_trait_filter ... ok [INFO] [stdout] test learn_iter::specs_learn::sam_trait_map ... ok [INFO] [stdout] test move_in_map::specs::move_in_maps ... ok [INFO] [stdout] test sample_map::specs::sample_map_simple ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0dafdfbd686b1072470c8a45c9c7eca4468cd50ba7a9542c9783c0424eb955f1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0dafdfbd686b1072470c8a45c9c7eca4468cd50ba7a9542c9783c0424eb955f1", kill_on_drop: false }` [INFO] [stdout] 0dafdfbd686b1072470c8a45c9c7eca4468cd50ba7a9542c9783c0424eb955f1