[INFO] cloning repository https://github.com/bartlomieju/rusty_btreec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bartlomieju/rusty_btreec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartlomieju%2Frusty_btreec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartlomieju%2Frusty_btreec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d268408ccf423e763400e53c04ffa3b5af3d81dd
[INFO] building bartlomieju/rusty_btreec 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%2Fbartlomieju%2Frusty_btreec" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bartlomieju/rusty_btreec 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/bartlomieju/rusty_btreec
[INFO] finished tweaking git repo https://github.com/bartlomieju/rusty_btreec
[INFO] tweaked toml for git repo https://github.com/bartlomieju/rusty_btreec written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bartlomieju/rusty_btreec 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dd7e73ee896146d62ccd30a203d6ae9ace40cc814513db35566cb9cc61393ab4
[INFO] running `Command { std: "docker" "start" "-a" "dd7e73ee896146d62ccd30a203d6ae9ace40cc814513db35566cb9cc61393ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd7e73ee896146d62ccd30a203d6ae9ace40cc814513db35566cb9cc61393ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd7e73ee896146d62ccd30a203d6ae9ace40cc814513db35566cb9cc61393ab4", kill_on_drop: false }`
[INFO] [stdout] dd7e73ee896146d62ccd30a203d6ae9ace40cc814513db35566cb9cc61393ab4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b26908a471c524290346b965899dca478ffd7f3fa301338b3a4b5bff8795820f
[INFO] running `Command { std: "docker" "start" "-a" "b26908a471c524290346b965899dca478ffd7f3fa301338b3a4b5bff8795820f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling btreec v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "b26908a471c524290346b965899dca478ffd7f3fa301338b3a4b5bff8795820f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b26908a471c524290346b965899dca478ffd7f3fa301338b3a4b5bff8795820f", kill_on_drop: false }`
[INFO] [stdout] b26908a471c524290346b965899dca478ffd7f3fa301338b3a4b5bff8795820f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 03741973ddf925953f3cd708cde609428e77e5331ae8add23cd832c6db05da73
[INFO] running `Command { std: "docker" "start" "-a" "03741973ddf925953f3cd708cde609428e77e5331ae8add23cd832c6db05da73", kill_on_drop: false }`
[INFO] [stderr]    Compiling btreec v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `text` is never read
[INFO] [stdout]    --> src/lib.rs:264:13
[INFO] [stdout]     |
[INFO] [stdout] 262 |         struct TestItem {
[INFO] [stdout]     |                -------- field in this struct
[INFO] [stdout] 263 |             key: String,
[INFO] [stdout] 264 |             text: String,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TestItem` has derived impls for the traits `Default`, `Clone`, and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "03741973ddf925953f3cd708cde609428e77e5331ae8add23cd832c6db05da73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03741973ddf925953f3cd708cde609428e77e5331ae8add23cd832c6db05da73", kill_on_drop: false }`
[INFO] [stdout] 03741973ddf925953f3cd708cde609428e77e5331ae8add23cd832c6db05da73