[INFO] updating cached repository https://github.com/kylehz/datastruct-rs [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] a3f3651406dca899435da60d92024842face5a92 [INFO] testing kylehz/datastruct-rs against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs" "/workspace/builds/worker-9/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kylehz/datastruct-rs on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/kylehz/datastruct-rs [INFO] finished tweaking git repo https://github.com/kylehz/datastruct-rs [INFO] tweaked toml for git repo https://github.com/kylehz/datastruct-rs written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/kylehz/datastruct-rs already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c857fa10f5d91f9ffbf7164074abde86bf0d6db3ae9a33b631f8affb5cd93694 [INFO] running `"docker" "start" "-a" "c857fa10f5d91f9ffbf7164074abde86bf0d6db3ae9a33b631f8affb5cd93694"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling datastruct-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/vec_deque.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | for i in 0..additional { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/linked_list.rs:40:13 [INFO] [stderr] | [INFO] [stderr] 40 | let mut node = Node::new(elem); [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/linked_list.rs:75:13 [INFO] [stderr] | [INFO] [stderr] 75 | let mut node = Node::new(elem); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `len` [INFO] [stderr] --> src/linked_list.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | len: usize, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.45s [INFO] running `"docker" "inspect" "c857fa10f5d91f9ffbf7164074abde86bf0d6db3ae9a33b631f8affb5cd93694"` [INFO] running `"docker" "rm" "-f" "c857fa10f5d91f9ffbf7164074abde86bf0d6db3ae9a33b631f8affb5cd93694"` [INFO] [stdout] c857fa10f5d91f9ffbf7164074abde86bf0d6db3ae9a33b631f8affb5cd93694 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 62acecccf3e3c96cc0db4f793bb151655f0f1951b1d98476b3e559b50bd1f3bf [INFO] running `"docker" "start" "-a" "62acecccf3e3c96cc0db4f793bb151655f0f1951b1d98476b3e559b50bd1f3bf"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling datastruct-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/vec_deque.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | for i in 0..additional { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/linked_list.rs:40:13 [INFO] [stderr] | [INFO] [stderr] 40 | let mut node = Node::new(elem); [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/linked_list.rs:75:13 [INFO] [stderr] | [INFO] [stderr] 75 | let mut node = Node::new(elem); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `len` [INFO] [stderr] --> src/linked_list.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | len: usize, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/vec_deque.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | for i in 0..additional { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/linked_list.rs:40:13 [INFO] [stderr] | [INFO] [stderr] 40 | let mut node = Node::new(elem); [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/linked_list.rs:75:13 [INFO] [stderr] | [INFO] [stderr] 75 | let mut node = Node::new(elem); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `len` [INFO] [stderr] --> src/linked_list.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | len: usize, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.07s [INFO] running `"docker" "inspect" "62acecccf3e3c96cc0db4f793bb151655f0f1951b1d98476b3e559b50bd1f3bf"` [INFO] running `"docker" "rm" "-f" "62acecccf3e3c96cc0db4f793bb151655f0f1951b1d98476b3e559b50bd1f3bf"` [INFO] [stdout] 62acecccf3e3c96cc0db4f793bb151655f0f1951b1d98476b3e559b50bd1f3bf [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 0e17b2cfa995ad9d9c1867a26eec6048f4f67a4bff1f371afc18dd7c082f3bd1 [INFO] running `"docker" "start" "-a" "0e17b2cfa995ad9d9c1867a26eec6048f4f67a4bff1f371afc18dd7c082f3bd1"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/vec_deque.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | for i in 0..additional { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/linked_list.rs:40:13 [INFO] [stderr] | [INFO] [stderr] 40 | let mut node = Node::new(elem); [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/linked_list.rs:75:13 [INFO] [stderr] | [INFO] [stderr] 75 | let mut node = Node::new(elem); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `len` [INFO] [stderr] --> src/linked_list.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | len: usize, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/vec_deque.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | for i in 0..additional { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/linked_list.rs:40:13 [INFO] [stderr] | [INFO] [stderr] 40 | let mut node = Node::new(elem); [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/linked_list.rs:75:13 [INFO] [stderr] | [INFO] [stderr] 75 | let mut node = Node::new(elem); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `len` [INFO] [stderr] --> src/linked_list.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | len: usize, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/datastruct_rs-6c31d6c1876a0f3c [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test linked_list::tests::test1 ... ok [INFO] [stdout] test linked_list::tests::test2 ... ok [INFO] [stdout] test stack::tests::stack_test ... ok [INFO] [stdout] test binary_search_tree::tests::test1 ... ok [INFO] [stdout] test vec_deque::tests::test1 ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests datastruct-rs [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "0e17b2cfa995ad9d9c1867a26eec6048f4f67a4bff1f371afc18dd7c082f3bd1"` [INFO] running `"docker" "rm" "-f" "0e17b2cfa995ad9d9c1867a26eec6048f4f67a4bff1f371afc18dd7c082f3bd1"` [INFO] [stdout] 0e17b2cfa995ad9d9c1867a26eec6048f4f67a4bff1f371afc18dd7c082f3bd1