[INFO] cloning repository https://github.com/carlsverre/rust-perf-binary-tree-traversals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carlsverre/rust-perf-binary-tree-traversals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlsverre%2Frust-perf-binary-tree-traversals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlsverre%2Frust-perf-binary-tree-traversals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 948c3fa8931cab964ec0f303cdd014659d1a73a1
[INFO] building carlsverre/rust-perf-binary-tree-traversals against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlsverre%2Frust-perf-binary-tree-traversals" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carlsverre/rust-perf-binary-tree-traversals on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carlsverre/rust-perf-binary-tree-traversals
[INFO] finished tweaking git repo https://github.com/carlsverre/rust-perf-binary-tree-traversals
[INFO] tweaked toml for git repo https://github.com/carlsverre/rust-perf-binary-tree-traversals written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/carlsverre/rust-perf-binary-tree-traversals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/teryror/coca`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3af15f9b1685e1c29696a11fd6c35aabf914ebcc86cff532626f21cdf42b19f
[INFO] running `Command { std: "docker" "start" "-a" "c3af15f9b1685e1c29696a11fd6c35aabf914ebcc86cff532626f21cdf42b19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3af15f9b1685e1c29696a11fd6c35aabf914ebcc86cff532626f21cdf42b19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3af15f9b1685e1c29696a11fd6c35aabf914ebcc86cff532626f21cdf42b19f", kill_on_drop: false }`
[INFO] [stdout] c3af15f9b1685e1c29696a11fd6c35aabf914ebcc86cff532626f21cdf42b19f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba03ed997b5256804bb907ab765a171345b98614a49c79c75c8778535d2df1ac
[INFO] running `Command { std: "docker" "start" "-a" "ba03ed997b5256804bb907ab765a171345b98614a49c79c75c8778535d2df1ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling coca v0.3.0 (https://github.com/teryror/coca?rev=cdb343abc5f63c87b78edb1441b0a4c41dc25ef4#cdb343ab)
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling btt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "ba03ed997b5256804bb907ab765a171345b98614a49c79c75c8778535d2df1ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba03ed997b5256804bb907ab765a171345b98614a49c79c75c8778535d2df1ac", kill_on_drop: false }`
[INFO] [stdout] ba03ed997b5256804bb907ab765a171345b98614a49c79c75c8778535d2df1ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e15e97d803fdb66e70d5b3c14d0a5a8147b924b20d2e68ccee48bc23b5f41bd
[INFO] running `Command { std: "docker" "start" "-a" "2e15e97d803fdb66e70d5b3c14d0a5a8147b924b20d2e68ccee48bc23b5f41bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling btt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "2e15e97d803fdb66e70d5b3c14d0a5a8147b924b20d2e68ccee48bc23b5f41bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e15e97d803fdb66e70d5b3c14d0a5a8147b924b20d2e68ccee48bc23b5f41bd", kill_on_drop: false }`
[INFO] [stdout] 2e15e97d803fdb66e70d5b3c14d0a5a8147b924b20d2e68ccee48bc23b5f41bd