[INFO] cloning repository https://github.com/snproj/string_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snproj/string_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnproj%2Fstring_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnproj%2Fstring_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0d027841bb690851e8e4164d4023ff19747ac61
[INFO] testing snproj/string_tree against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnproj%2Fstring_tree" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snproj/string_tree on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snproj/string_tree
[INFO] finished tweaking git repo https://github.com/snproj/string_tree
[INFO] tweaked toml for git repo https://github.com/snproj/string_tree written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/snproj/string_tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8a1d55c15d947ceb6a5bd3e53b458a4f3f09b53801b60b9bbd3a4ded58f2d7b
[INFO] running `Command { std: "docker" "start" "-a" "d8a1d55c15d947ceb6a5bd3e53b458a4f3f09b53801b60b9bbd3a4ded58f2d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8a1d55c15d947ceb6a5bd3e53b458a4f3f09b53801b60b9bbd3a4ded58f2d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a1d55c15d947ceb6a5bd3e53b458a4f3f09b53801b60b9bbd3a4ded58f2d7b", kill_on_drop: false }`
[INFO] [stdout] d8a1d55c15d947ceb6a5bd3e53b458a4f3f09b53801b60b9bbd3a4ded58f2d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cc4d07c468629fdc1d7039aa715c3dfd00581b9f80d8ce6de5a63ef910c3bee
[INFO] running `Command { std: "docker" "start" "-a" "7cc4d07c468629fdc1d7039aa715c3dfd00581b9f80d8ce6de5a63ef910c3bee", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dict`
[INFO] [stdout]    --> src/word_actionator.rs:168:57
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn commence_action(&self, target: Arc<Mutex<VSON>>, dict: Arc<Mutex<T>>) -> Option<Arc<Mutex<WordActionResult>>>{
[INFO] [stdout]     |                                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_dict`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pprint`
[INFO] [stdout]   --> src/traverser.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn pprint(thing: &VSON, tab_count: usize) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pprint_store`
[INFO] [stdout]    --> src/traverser.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn pprint_store(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pprint_store_ptr`
[INFO] [stdout]    --> src/traverser.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn pprint_store_ptr(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "7cc4d07c468629fdc1d7039aa715c3dfd00581b9f80d8ce6de5a63ef910c3bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cc4d07c468629fdc1d7039aa715c3dfd00581b9f80d8ce6de5a63ef910c3bee", kill_on_drop: false }`
[INFO] [stdout] 7cc4d07c468629fdc1d7039aa715c3dfd00581b9f80d8ce6de5a63ef910c3bee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f345e5eeedc65e4b5d7ca7ca57f65707be5f42f239caf29e82901d942bec84bd
[INFO] running `Command { std: "docker" "start" "-a" "f345e5eeedc65e4b5d7ca7ca57f65707be5f42f239caf29e82901d942bec84bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dict`
[INFO] [stdout]    --> src/word_actionator.rs:168:57
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn commence_action(&self, target: Arc<Mutex<VSON>>, dict: Arc<Mutex<T>>) -> Option<Arc<Mutex<WordActionResult>>>{
[INFO] [stdout]     |                                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_dict`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pprint`
[INFO] [stdout]   --> src/traverser.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn pprint(thing: &VSON, tab_count: usize) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pprint_store`
[INFO] [stdout]    --> src/traverser.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn pprint_store(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pprint_store_ptr`
[INFO] [stdout]    --> src/traverser.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn pprint_store_ptr(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "f345e5eeedc65e4b5d7ca7ca57f65707be5f42f239caf29e82901d942bec84bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f345e5eeedc65e4b5d7ca7ca57f65707be5f42f239caf29e82901d942bec84bd", kill_on_drop: false }`
[INFO] [stdout] f345e5eeedc65e4b5d7ca7ca57f65707be5f42f239caf29e82901d942bec84bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 42e30c765e34fa4506e9f273d9afc93d80aabb7182eb9afdd4b4636aec589418
[INFO] running `Command { std: "docker" "start" "-a" "42e30c765e34fa4506e9f273d9afc93d80aabb7182eb9afdd4b4636aec589418", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `dict`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/word_actionator.rs:168:57
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 168 |     fn commence_action(&self, target: Arc<Mutex<VSON>>, dict: Arc<Mutex<T>>) -> Option<Arc<Mutex<WordActionResult>>>{
[INFO] [stdout] 
[INFO] [stderr]     |                                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_dict`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pprint`
[INFO] [stderr]   --> src/traverser.rs:55:12
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn pprint(thing: &VSON, tab_count: usize) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pprint_store`
[INFO] [stderr]    --> src/traverser.rs:121:12
[INFO] [stderr]     |
[INFO] [stderr] 121 |     pub fn pprint_store(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pprint_store_ptr`
[INFO] [stderr]    --> src/traverser.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub fn pprint_store_ptr(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `string_tree` (bin "string_tree" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/string_tree-252f056e13b0579c)
[INFO] running `Command { std: "docker" "inspect" "42e30c765e34fa4506e9f273d9afc93d80aabb7182eb9afdd4b4636aec589418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42e30c765e34fa4506e9f273d9afc93d80aabb7182eb9afdd4b4636aec589418", kill_on_drop: false }`
[INFO] [stdout] 42e30c765e34fa4506e9f273d9afc93d80aabb7182eb9afdd4b4636aec589418