[INFO] updating cached repository https://github.com/addityasingh/sknife [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 5c3d9eaf53db77676f010c7f17d6e224ee4b7c57 [INFO] checking addityasingh/sknife against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faddityasingh%2Fsknife" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/addityasingh/sknife on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/addityasingh/sknife [INFO] finished tweaking git repo https://github.com/addityasingh/sknife [INFO] tweaked toml for git repo https://github.com/addityasingh/sknife written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/addityasingh/sknife already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 0255dc0ab9f7d96449e6063c5d7c30b31cdeb3d732ca7e068eb5643eb8f146de [INFO] running `"docker" "start" "-a" "0255dc0ab9f7d96449e6063c5d7c30b31cdeb3d732ca7e068eb5643eb8f146de"` [INFO] [stderr] Checking sknife v0.2.2 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/collection/any.rs:40:9 [INFO] [stderr] | [INFO] [stderr] 40 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/collection/count.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/collection/find.rs:39:9 [INFO] [stderr] | [INFO] [stderr] 39 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/collection/flatmap.rs:35:9 [INFO] [stderr] | [INFO] [stderr] 35 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std` [INFO] [stderr] --> src/collection/zip.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std; [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std` [INFO] [stderr] --> src/collection/zip.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std; [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/any.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_attributes)]` on by default [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/any.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/count.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/count.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/find.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/find.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/flatmap.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/flatmap.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/map.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/map.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/reduce.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/reduce.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/zip.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/zip.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 19 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection/any.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | let mut list = vec![]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection/any.rs:54:13 [INFO] [stderr] | [INFO] [stderr] 54 | let mut list = vec![1, 2, 3, 4]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection/count.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | let mut list: Vec = vec![]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection/count.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | let mut list = vec![1, 2, 3, 4]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection/find.rs:43:13 [INFO] [stderr] | [INFO] [stderr] 43 | let mut list = vec![]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection/find.rs:53:13 [INFO] [stderr] | [INFO] [stderr] 53 | let mut list = vec![1, 2, 3, 4]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/any.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_attributes)]` on by default [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/any.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/count.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/count.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/find.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/find.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/flatmap.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/flatmap.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/map.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/map.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/reduce.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/reduce.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/collection/zip.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: crate-level attribute should be in the root module [INFO] [stderr] --> src/collection/zip.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![crate_name = "sknife"] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 21 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_reduce.rs:15:13 [INFO] [stderr] | [INFO] [stderr] 15 | let mut fact = |acc: i32, x| acc * x; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_reduce.rs:21:13 [INFO] [stderr] | [INFO] [stderr] 21 | let mut list: Vec = (1..50).collect(); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_reduce.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | let mut fact = |acc: i32, x| acc * x; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_flatmap.rs:15:13 [INFO] [stderr] | [INFO] [stderr] 15 | let mut slice: &mut [i32] = list.as_mut_slice(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_flatmap.rs:16:13 [INFO] [stderr] | [INFO] [stderr] 16 | let mut plus_one = |x: &mut i32| vec![*x]; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_map.rs:15:13 [INFO] [stderr] | [INFO] [stderr] 15 | let mut slice = list.as_mut_slice(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_map.rs:16:13 [INFO] [stderr] | [INFO] [stderr] 16 | let mut plus_one = |x: i32| x + 1; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_flatmap.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | let mut list = vec![1, 2, 3]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_flatmap.rs:23:13 [INFO] [stderr] | [INFO] [stderr] 23 | let mut plus_one = |x| vec![x]; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_map.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | let mut list = vec![1, 2, 3]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> benches/collections_map.rs:23:13 [INFO] [stderr] | [INFO] [stderr] 23 | let mut plus_one = |x| x + 1; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> tests/collections_find.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut list = vec![1, 3, 4, 7, 3, 9]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> tests/collections_any.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut list = vec![1, 2, 3, 4]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.30s [INFO] running `"docker" "inspect" "0255dc0ab9f7d96449e6063c5d7c30b31cdeb3d732ca7e068eb5643eb8f146de"` [INFO] running `"docker" "rm" "-f" "0255dc0ab9f7d96449e6063c5d7c30b31cdeb3d732ca7e068eb5643eb8f146de"` [INFO] [stdout] 0255dc0ab9f7d96449e6063c5d7c30b31cdeb3d732ca7e068eb5643eb8f146de