[INFO] cloning repository https://github.com/AlyHKafoury/rust_btree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlyHKafoury/rust_btree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlyHKafoury%2Frust_btree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlyHKafoury%2Frust_btree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b07d989d8e38d829e95937bd60a3d3379176205c
[INFO] testing AlyHKafoury/rust_btree against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlyHKafoury%2Frust_btree" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlyHKafoury/rust_btree 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/AlyHKafoury/rust_btree
[INFO] finished tweaking git repo https://github.com/AlyHKafoury/rust_btree
[INFO] tweaked toml for git repo https://github.com/AlyHKafoury/rust_btree written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/AlyHKafoury/rust_btree 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] a831d1e9b651a34eb30582c40bad70e9235dafc7e4c82df2a50343e115a342ed
[INFO] running `Command { std: "docker" "start" "-a" "a831d1e9b651a34eb30582c40bad70e9235dafc7e4c82df2a50343e115a342ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a831d1e9b651a34eb30582c40bad70e9235dafc7e4c82df2a50343e115a342ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a831d1e9b651a34eb30582c40bad70e9235dafc7e4c82df2a50343e115a342ed", kill_on_drop: false }`
[INFO] [stdout] a831d1e9b651a34eb30582c40bad70e9235dafc7e4c82df2a50343e115a342ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 2f7990a9b86545b3881089ab4abd1ca4f8a822c698216fef462a055aa62e7ad6
[INFO] running `Command { std: "docker" "start" "-a" "2f7990a9b86545b3881089ab4abd1ca4f8a822c698216fef462a055aa62e7ad6", kill_on_drop: false }`
[INFO] [stderr]    Compiling btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/lib.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |   pub fn search(&self, k: isize) -> Option<&BtreeNode> {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "2f7990a9b86545b3881089ab4abd1ca4f8a822c698216fef462a055aa62e7ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f7990a9b86545b3881089ab4abd1ca4f8a822c698216fef462a055aa62e7ad6", kill_on_drop: false }`
[INFO] [stdout] 2f7990a9b86545b3881089ab4abd1ca4f8a822c698216fef462a055aa62e7ad6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 0e45850e776d3b24afd6045a5deacd548847e77981685b4cc1ce067a6c7ea66a
[INFO] running `Command { std: "docker" "start" "-a" "0e45850e776d3b24afd6045a5deacd548847e77981685b4cc1ce067a6c7ea66a", kill_on_drop: false }`
[INFO] [stderr]    Compiling btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/lib.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |   pub fn search(&self, k: isize) -> Option<&BtreeNode> {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "0e45850e776d3b24afd6045a5deacd548847e77981685b4cc1ce067a6c7ea66a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e45850e776d3b24afd6045a5deacd548847e77981685b4cc1ce067a6c7ea66a", kill_on_drop: false }`
[INFO] [stdout] 0e45850e776d3b24afd6045a5deacd548847e77981685b4cc1ce067a6c7ea66a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] ef5925cfa8db8f30c810de74eb3019b546d7bebfc2a11319a9a44ff1deb2990a
[INFO] running `Command { std: "docker" "start" "-a" "ef5925cfa8db8f30c810de74eb3019b546d7bebfc2a11319a9a44ff1deb2990a", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `search`
[INFO] [stderr]   --> src/lib.rs:43:10
[INFO] [stderr]    |
[INFO] [stderr] 43 |   pub fn search(&self, k: isize) -> Option<&BtreeNode> {
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `btree` (bin "btree" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/btree-3e0aabe4e2cc0cbd)
[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; finished in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/btree-0b473d099e0669e0)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests btree
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ef5925cfa8db8f30c810de74eb3019b546d7bebfc2a11319a9a44ff1deb2990a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5925cfa8db8f30c810de74eb3019b546d7bebfc2a11319a9a44ff1deb2990a", kill_on_drop: false }`
[INFO] [stdout] ef5925cfa8db8f30c810de74eb3019b546d7bebfc2a11319a9a44ff1deb2990a