[INFO] fetching crate treelike 0.2.0...
[INFO] testing treelike-0.2.0 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate treelike 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate treelike 0.2.0 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 crates.io crate treelike 0.2.0
[INFO] finished tweaking crates.io crate treelike 0.2.0
[INFO] tweaked toml for crates.io crate treelike 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f0e8b23827b578cf5508f01a8b6b405b5759eea13ed7256ecea3c7164c56770
[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" "6f0e8b23827b578cf5508f01a8b6b405b5759eea13ed7256ecea3c7164c56770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f0e8b23827b578cf5508f01a8b6b405b5759eea13ed7256ecea3c7164c56770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0e8b23827b578cf5508f01a8b6b405b5759eea13ed7256ecea3c7164c56770", kill_on_drop: false }`
[INFO] [stdout] 6f0e8b23827b578cf5508f01a8b6b405b5759eea13ed7256ecea3c7164c56770
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c987f25c1b4c6e77294714b4f22fb2ae281f90da572e4664f484f82270e3dba
[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" "4c987f25c1b4c6e77294714b4f22fb2ae281f90da572e4664f484f82270e3dba", kill_on_drop: false }`
[INFO] [stderr]    Compiling treelike v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/treelike.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 |               callback_bft(
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 181 | |                 self,
[INFO] [stdout] 182 | |                 |content| {
[INFO] [stdout] 183 | |                     count += 1;
[INFO] [stdout] ...   |
[INFO] [stdout] 188 | |                 0,
[INFO] [stdout] 189 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "4c987f25c1b4c6e77294714b4f22fb2ae281f90da572e4664f484f82270e3dba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c987f25c1b4c6e77294714b4f22fb2ae281f90da572e4664f484f82270e3dba", kill_on_drop: false }`
[INFO] [stdout] 4c987f25c1b4c6e77294714b4f22fb2ae281f90da572e4664f484f82270e3dba
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b80ee7dd487f72418aafd78a493b7620980ea9729e570b46c475e11a893b518
[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" "9b80ee7dd487f72418aafd78a493b7620980ea9729e570b46c475e11a893b518", kill_on_drop: false }`
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/treelike.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 |               callback_bft(
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 181 | |                 self,
[INFO] [stdout] 182 | |                 |content| {
[INFO] [stdout] 183 | |                     count += 1;
[INFO] [stdout] ...   |
[INFO] [stdout] 188 | |                 0,
[INFO] [stdout] 189 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling treelike v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/treelike.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 |               callback_bft(
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 181 | |                 self,
[INFO] [stdout] 182 | |                 |content| {
[INFO] [stdout] 183 | |                     count += 1;
[INFO] [stdout] ...   |
[INFO] [stdout] 188 | |                 0,
[INFO] [stdout] 189 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "9b80ee7dd487f72418aafd78a493b7620980ea9729e570b46c475e11a893b518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b80ee7dd487f72418aafd78a493b7620980ea9729e570b46c475e11a893b518", kill_on_drop: false }`
[INFO] [stdout] 9b80ee7dd487f72418aafd78a493b7620980ea9729e570b46c475e11a893b518
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 81bc1828099696b148221b448d80dec47bf29a681713cdee12ef7a83d3d79cef
[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" "81bc1828099696b148221b448d80dec47bf29a681713cdee12ef7a83d3d79cef", kill_on_drop: false }`
[INFO] [stderr] warning: unused closure that must be used
[INFO] [stderr]    --> src/treelike.rs:180:4
[INFO] [stderr]     |
[INFO] [stderr] 180 |               callback_bft(
[INFO] [stderr]     |  _____________^
[INFO] [stderr] 181 | |                 self,
[INFO] [stderr] 182 | |                 |content| {
[INFO] [stderr] 183 | |                     count += 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 188 | |                 0,
[INFO] [stderr] 189 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: closures are lazy and do nothing unless called
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused closure that must be used
[INFO] [stderr]    --> src/treelike.rs:180:4
[INFO] [stderr]     |
[INFO] [stderr] 180 |               callback_bft(
[INFO] [stderr]     |  _____________^
[INFO] [stderr] 181 | |                 self,
[INFO] [stderr] 182 | |                 |content| {
[INFO] [stderr] 183 | |                     count += 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 188 | |                 0,
[INFO] [stderr] 189 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: closures are lazy and do nothing unless called
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/treelike-3efbe14625c0ac1d
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test example::boxtree::option_box_size ... ok
[INFO] [stdout] test example::lintree::basic_test ... ok
[INFO] [stdout] test example::lintree::iter_test ... ok
[INFO] [stdout] test example::lintree::bft_pre_test ... ok
[INFO] [stdout] test example::lintree::dft_pre_test ... ok
[INFO] [stdout] test example::borrowtree::borrowing_tree_works ... ok
[INFO] [stdout] test example::boxtree::default_works ... ok
[INFO] [stdout] test example::borrowtree::option_ref_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests treelike
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/treelike.rs - treelike::Treelike::callback_dft (line 88) ... ok
[INFO] [stdout] test src/treelike.rs - treelike::Treelike::callback_bft (line 142) ... ok
[INFO] [stdout] test src/treelike.rs - treelike::Treelike::callback_dft (line 104) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "81bc1828099696b148221b448d80dec47bf29a681713cdee12ef7a83d3d79cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81bc1828099696b148221b448d80dec47bf29a681713cdee12ef7a83d3d79cef", kill_on_drop: false }`
[INFO] [stdout] 81bc1828099696b148221b448d80dec47bf29a681713cdee12ef7a83d3d79cef