[INFO] cloning repository https://github.com/moorts/theo_sem2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/moorts/theo_sem2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoorts%2Ftheo_sem2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoorts%2Ftheo_sem2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98c67e71567049b8afda7a45ed45077cf11e49b0
[INFO] testing moorts/theo_sem2 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoorts%2Ftheo_sem2" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/moorts/theo_sem2 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/moorts/theo_sem2
[INFO] finished tweaking git repo https://github.com/moorts/theo_sem2
[INFO] tweaked toml for git repo https://github.com/moorts/theo_sem2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/moorts/theo_sem2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce5a739f7fa838c3bd632636e0377ca237ac214108dbea4f92b44e3067a77372
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ce5a739f7fa838c3bd632636e0377ca237ac214108dbea4f92b44e3067a77372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce5a739f7fa838c3bd632636e0377ca237ac214108dbea4f92b44e3067a77372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce5a739f7fa838c3bd632636e0377ca237ac214108dbea4f92b44e3067a77372", kill_on_drop: false }`
[INFO] [stdout] ce5a739f7fa838c3bd632636e0377ca237ac214108dbea4f92b44e3067a77372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26cc7df99451ea770fbf543d6224368c964dfe7eaaf55f68a72094ecf838fb7f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "26cc7df99451ea770fbf543d6224368c964dfe7eaaf55f68a72094ecf838fb7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling theo_sem2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/tree.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::convert::TryInto;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let tree = binary_tree::tree_from_vec(&vec);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/tree.rs:189:25
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub fn bst_preorder(tree: &BinarySearchTree) {
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/tree.rs:192:26
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn bst_postorder(tree: &BinarySearchTree) {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/tree.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 Some(x) => size = 1,
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/tree.rs:125:17
[INFO] [stdout]     |
[INFO] [stdout] 125 |             let root = self.value.unwrap();
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]    --> src/tree.rs:124:44
[INFO] [stdout]     |
[INFO] [stdout] 124 |         pub fn remove_root_and_swap(&self, left: bool) {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tree.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 |                         let mut rsize = 0;
[INFO] [stdout]     |                             ----^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "26cc7df99451ea770fbf543d6224368c964dfe7eaaf55f68a72094ecf838fb7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26cc7df99451ea770fbf543d6224368c964dfe7eaaf55f68a72094ecf838fb7f", kill_on_drop: false }`
[INFO] [stdout] 26cc7df99451ea770fbf543d6224368c964dfe7eaaf55f68a72094ecf838fb7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44692a4761471f2d57a3bba68b7f83f61ea97368d134db4e4128b70043d7aec6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "44692a4761471f2d57a3bba68b7f83f61ea97368d134db4e4128b70043d7aec6", kill_on_drop: false }`
[INFO] [stderr]    Compiling theo_sem2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/tree.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::convert::TryInto;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let tree = binary_tree::tree_from_vec(&vec);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/tree.rs:189:25
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub fn bst_preorder(tree: &BinarySearchTree) {
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/tree.rs:192:26
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn bst_postorder(tree: &BinarySearchTree) {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/tree.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 Some(x) => size = 1,
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/tree.rs:125:17
[INFO] [stdout]     |
[INFO] [stdout] 125 |             let root = self.value.unwrap();
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]    --> src/tree.rs:124:44
[INFO] [stdout]     |
[INFO] [stdout] 124 |         pub fn remove_root_and_swap(&self, left: bool) {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tree.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 |                         let mut rsize = 0;
[INFO] [stdout]     |                             ----^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "44692a4761471f2d57a3bba68b7f83f61ea97368d134db4e4128b70043d7aec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44692a4761471f2d57a3bba68b7f83f61ea97368d134db4e4128b70043d7aec6", kill_on_drop: false }`
[INFO] [stdout] 44692a4761471f2d57a3bba68b7f83f61ea97368d134db4e4128b70043d7aec6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b46c923ae611c7b2eeaa95c8e2e2cba14d10ded6cdfe43b342b8ba7ec86cbf55
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b46c923ae611c7b2eeaa95c8e2e2cba14d10ded6cdfe43b342b8ba7ec86cbf55", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/tree.rs:4:9
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 4 |     use std::convert::TryInto;
[INFO] [stdout] 
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let tree = binary_tree::tree_from_vec(&vec);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]    --> src/tree.rs:189:25
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn bst_preorder(tree: &BinarySearchTree) {
[INFO] [stderr]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]    --> src/tree.rs:192:26
[INFO] [stderr]     |
[INFO] [stderr] 192 |     pub fn bst_postorder(tree: &BinarySearchTree) {
[INFO] [stderr]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/tree.rs:84:22
[INFO] [stderr]    |
[INFO] [stderr] 84 |                 Some(x) => size = 1,
[INFO] [stderr]    |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]    --> src/tree.rs:125:17
[INFO] [stderr]     |
[INFO] [stderr] 125 |             let root = self.value.unwrap();
[INFO] [stderr]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]    --> src/tree.rs:124:44
[INFO] [stderr]     |
[INFO] [stderr] 124 |         pub fn remove_root_and_swap(&self, left: bool) {
[INFO] [stderr]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tree.rs:103:29
[INFO] [stderr]     |
[INFO] [stderr] 103 |                         let mut rsize = 0;
[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: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/theo_sem2-a20ac6ca0f05d087
[INFO] running `Command { std: "docker" "inspect" "b46c923ae611c7b2eeaa95c8e2e2cba14d10ded6cdfe43b342b8ba7ec86cbf55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b46c923ae611c7b2eeaa95c8e2e2cba14d10ded6cdfe43b342b8ba7ec86cbf55", kill_on_drop: false }`
[INFO] [stdout] b46c923ae611c7b2eeaa95c8e2e2cba14d10ded6cdfe43b342b8ba7ec86cbf55