[INFO] cloning repository https://github.com/t-ob/tinylisp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t-ob/tinylisp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-ob%2Ftinylisp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-ob%2Ftinylisp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d250d53e482dc946687de7de1d3dff97926a83b
[INFO] building t-ob/tinylisp 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%2Ft-ob%2Ftinylisp" "/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/t-ob/tinylisp 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/t-ob/tinylisp
[INFO] finished tweaking git repo https://github.com/t-ob/tinylisp
[INFO] tweaked toml for git repo https://github.com/t-ob/tinylisp written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/t-ob/tinylisp 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]     Blocking waiting for file lock on package cache
[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] dfad59a25b0a40d46a3b8583e3fbb5365afee20bce8447130b39cf3b80715888
[INFO] running `Command { std: "docker" "start" "-a" "dfad59a25b0a40d46a3b8583e3fbb5365afee20bce8447130b39cf3b80715888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfad59a25b0a40d46a3b8583e3fbb5365afee20bce8447130b39cf3b80715888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfad59a25b0a40d46a3b8583e3fbb5365afee20bce8447130b39cf3b80715888", kill_on_drop: false }`
[INFO] [stdout] dfad59a25b0a40d46a3b8583e3fbb5365afee20bce8447130b39cf3b80715888
[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] 3ddb2836100134f0b10b907c51fc3d48357f437e6e76cc1df360880dc82f9477
[INFO] running `Command { std: "docker" "start" "-a" "3ddb2836100134f0b10b907c51fc3d48357f437e6e76cc1df360880dc82f9477", kill_on_drop: false }`
[INFO] [stderr]    Compiling tinylisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]   --> src/lib.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn eval(ast: &AST) -> Result<Value, String> {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "3ddb2836100134f0b10b907c51fc3d48357f437e6e76cc1df360880dc82f9477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ddb2836100134f0b10b907c51fc3d48357f437e6e76cc1df360880dc82f9477", kill_on_drop: false }`
[INFO] [stdout] 3ddb2836100134f0b10b907c51fc3d48357f437e6e76cc1df360880dc82f9477
[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] 6d345156373b237e7bfd7658bf30ce8263d8dcb3917531b73c6915c1af53c6bc
[INFO] running `Command { std: "docker" "start" "-a" "6d345156373b237e7bfd7658bf30ce8263d8dcb3917531b73c6915c1af53c6bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling tinylisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]   --> src/lib.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn eval(ast: &AST) -> Result<Value, String> {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]   --> src/lib.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn eval(ast: &AST) -> Result<Value, String> {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "6d345156373b237e7bfd7658bf30ce8263d8dcb3917531b73c6915c1af53c6bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d345156373b237e7bfd7658bf30ce8263d8dcb3917531b73c6915c1af53c6bc", kill_on_drop: false }`
[INFO] [stdout] 6d345156373b237e7bfd7658bf30ce8263d8dcb3917531b73c6915c1af53c6bc