[INFO] updating cached repository lochbrunner/rust-hacks [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/lochbrunner/rust-hacks [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/lochbrunner/rust-hacks" "work/ex/beta-1.38-1/sources/1.37.0/gh/lochbrunner/rust-hacks"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lochbrunner/rust-hacks'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/lochbrunner/rust-hacks" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochbrunner/rust-hacks"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochbrunner/rust-hacks'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 04a14e80469215a2b365dd3d60ca86a6520cd2ad [INFO] sha for GitHub repo lochbrunner/rust-hacks: 04a14e80469215a2b365dd3d60ca86a6520cd2ad [INFO] validating manifest of lochbrunner/rust-hacks on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of lochbrunner/rust-hacks on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing lochbrunner/rust-hacks [INFO] finished frobbing lochbrunner/rust-hacks [INFO] frobbed toml for lochbrunner/rust-hacks written to work/ex/beta-1.38-1/sources/1.37.0/gh/lochbrunner/rust-hacks/Cargo.toml [INFO] started frobbing lochbrunner/rust-hacks [INFO] finished frobbing lochbrunner/rust-hacks [INFO] frobbed toml for lochbrunner/rust-hacks written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochbrunner/rust-hacks/Cargo.toml [INFO] crate lochbrunner/rust-hacks already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing lochbrunner/rust-hacks against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochbrunner/rust-hacks:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 42974f3d40f88d2da657a08c2f7ec2b368abac8233f32ffb550112fcd61055b6 [INFO] running `"docker" "start" "-a" "42974f3d40f88d2da657a08c2f7ec2b368abac8233f32ffb550112fcd61055b6"` [INFO] [stderr] Compiling rust-hacks v0.1.0 (/opt/crater/workdir) [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] = note: `#[warn(bare_trait_objects)]` on by default [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: consider prefixing with an underscore: `_s` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/cross_join.rs:23:5 [INFO] [stderr] | [INFO] [stderr] 23 | pub fn new(left_iter: L, samples: &'a [R]) -> CrossJoin<'a, R, L> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `SampleMap` [INFO] [stderr] --> src/sample_map.rs:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | pub struct SampleMap<'a, I, F, S> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/sample_map.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | pub(super) fn new(iter: I, f: F, s: &'a [S]) -> SampleMap<'a, I, F, S> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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] Finished dev [unoptimized + debuginfo] target(s) in 0.58s [INFO] running `"docker" "inspect" "42974f3d40f88d2da657a08c2f7ec2b368abac8233f32ffb550112fcd61055b6"` [INFO] running `"docker" "rm" "-f" "42974f3d40f88d2da657a08c2f7ec2b368abac8233f32ffb550112fcd61055b6"` [INFO] [stdout] 42974f3d40f88d2da657a08c2f7ec2b368abac8233f32ffb550112fcd61055b6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochbrunner/rust-hacks:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] d966a2507a43b14e6c9abeec716e75e725b8723d840de6cd7a70e0725ace0380 [INFO] running `"docker" "start" "-a" "d966a2507a43b14e6c9abeec716e75e725b8723d840de6cd7a70e0725ace0380"` [INFO] [stderr] Compiling rust-hacks v0.1.0 (/opt/crater/workdir) [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] [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: 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: consider prefixing with an underscore: `_arg` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [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: consider prefixing with an underscore: `_output` [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: consider prefixing with an underscore: `_s` [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 `std::iter::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] Finished dev [unoptimized + debuginfo] target(s) in 1.33s [INFO] running `"docker" "inspect" "d966a2507a43b14e6c9abeec716e75e725b8723d840de6cd7a70e0725ace0380"` [INFO] running `"docker" "rm" "-f" "d966a2507a43b14e6c9abeec716e75e725b8723d840de6cd7a70e0725ace0380"` [INFO] [stdout] d966a2507a43b14e6c9abeec716e75e725b8723d840de6cd7a70e0725ace0380 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochbrunner/rust-hacks:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] fd953547049595299ec129d43c61911ad6a3c22a717a1159ceb0ccf45e76adb3 [INFO] running `"docker" "start" "-a" "fd953547049595299ec129d43c61911ad6a3c22a717a1159ceb0ccf45e76adb3"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/rust_hacks-d1d99d421abaded0 [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test sample_map::specs::sample_map_simple ... ok [INFO] [stdout] test move_in_map::specs::move_in_maps ... ok [INFO] [stdout] test learn_iter::specs_learn::sam_trait_map ... 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 ... ok [INFO] [stdout] test count_calls::stackoverflow::test ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "fd953547049595299ec129d43c61911ad6a3c22a717a1159ceb0ccf45e76adb3"` [INFO] running `"docker" "rm" "-f" "fd953547049595299ec129d43c61911ad6a3c22a717a1159ceb0ccf45e76adb3"` [INFO] [stdout] fd953547049595299ec129d43c61911ad6a3c22a717a1159ceb0ccf45e76adb3