[INFO] updating cached repository https://github.com/CrimsonAndRed/MyLittleTree [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] 78579106ceda8e62514cfb157392a5c603b54fdf [INFO] testing CrimsonAndRed/MyLittleTree against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrimsonAndRed%2FMyLittleTree" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/CrimsonAndRed/MyLittleTree 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/CrimsonAndRed/MyLittleTree [INFO] finished tweaking git repo https://github.com/CrimsonAndRed/MyLittleTree [INFO] tweaked toml for git repo https://github.com/CrimsonAndRed/MyLittleTree written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/CrimsonAndRed/MyLittleTree 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 0069e1ef843f50afeeba816905b1c8ed156c1147f08a76f6e00d9b040fa4d6b7 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "0069e1ef843f50afeeba816905b1c8ed156c1147f08a76f6e00d9b040fa4d6b7"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling my_little_tree v1.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:108:27 [INFO] [stderr] | [INFO] [stderr] 102 | match &self.root { [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 108 | Some(link) => self.inner_insert(new_node, Rc::clone(&link)), [INFO] [stderr] | ^^^^ mutable borrow occurs here ----- immutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.42s [INFO] running `"docker" "inspect" "0069e1ef843f50afeeba816905b1c8ed156c1147f08a76f6e00d9b040fa4d6b7"` [INFO] running `"docker" "rm" "-f" "0069e1ef843f50afeeba816905b1c8ed156c1147f08a76f6e00d9b040fa4d6b7"` [INFO] [stdout] 0069e1ef843f50afeeba816905b1c8ed156c1147f08a76f6e00d9b040fa4d6b7 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 3af70b1e2a32b625f225497fc7d49407c7a49b68c9ccfc2a42cbb33ddd1b488e [INFO] running `"docker" "start" "-a" "3af70b1e2a32b625f225497fc7d49407c7a49b68c9ccfc2a42cbb33ddd1b488e"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling my_little_tree v1.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:108:27 [INFO] [stderr] | [INFO] [stderr] 102 | match &self.root { [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 108 | Some(link) => self.inner_insert(new_node, Rc::clone(&link)), [INFO] [stderr] | ^^^^ mutable borrow occurs here ----- immutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:108:27 [INFO] [stderr] | [INFO] [stderr] 102 | match &self.root { [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 108 | Some(link) => self.inner_insert(new_node, Rc::clone(&link)), [INFO] [stderr] | ^^^^ mutable borrow occurs here ----- immutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.04s [INFO] running `"docker" "inspect" "3af70b1e2a32b625f225497fc7d49407c7a49b68c9ccfc2a42cbb33ddd1b488e"` [INFO] running `"docker" "rm" "-f" "3af70b1e2a32b625f225497fc7d49407c7a49b68c9ccfc2a42cbb33ddd1b488e"` [INFO] [stdout] 3af70b1e2a32b625f225497fc7d49407c7a49b68c9ccfc2a42cbb33ddd1b488e [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 38e34fd585af720713c01d8da41361edaa66f21ddd585ab5b9f65deab25bcfa2 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "38e34fd585af720713c01d8da41361edaa66f21ddd585ab5b9f65deab25bcfa2"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:108:27 [INFO] [stderr] | [INFO] [stderr] 102 | match &self.root { [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 108 | Some(link) => self.inner_insert(new_node, Rc::clone(&link)), [INFO] [stderr] | ^^^^ mutable borrow occurs here ----- immutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:108:27 [INFO] [stderr] | [INFO] [stderr] 102 | match &self.root { [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 108 | Some(link) => self.inner_insert(new_node, Rc::clone(&link)), [INFO] [stderr] | ^^^^ mutable borrow occurs here ----- immutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/my_little_tree-cda184d1f2718cf6 [INFO] [stdout] [INFO] [stdout] running 17 tests [INFO] [stdout] test tests::delete_node_both_r_diff ... ok [INFO] [stdout] test tests::delete_node_l ... ok [INFO] [stdout] test tests::delete_node_both_r_same ... ok [INFO] [stdout] test tests::delete_node_none ... ok [INFO] [stdout] test tests::delete_root_both_same ... ok [INFO] [stdout] test tests::delete_node_both_l_diff ... ok [INFO] [stdout] test tests::delete_node_r ... ok [INFO] [stdout] test tests::delete_root_both_diff ... ok [INFO] [stdout] test tests::delete_root_l ... ok [INFO] [stdout] test tests::delete_root_none ... ok [INFO] [stdout] test tests::iterate ... ok [INFO] [stdout] test tests::delete_root_r ... ok [INFO] [stdout] test tests::empty_tree ... ok [INFO] [stdout] test tests::insert_find ... ok [INFO] [stdout] test tests::delete_find ... ok [INFO] [stdout] test tests::delete_node_both_l_same ... ok [INFO] [stdout] test tests::delete_miss ... ok [INFO] [stderr] Doc-tests my_little_tree [INFO] [stdout] [INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [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" "38e34fd585af720713c01d8da41361edaa66f21ddd585ab5b9f65deab25bcfa2"` [INFO] running `"docker" "rm" "-f" "38e34fd585af720713c01d8da41361edaa66f21ddd585ab5b9f65deab25bcfa2"` [INFO] [stdout] 38e34fd585af720713c01d8da41361edaa66f21ddd585ab5b9f65deab25bcfa2