[INFO] cloning repository https://github.com/laurix-dev/turing_machine_ufu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laurix-dev/turing_machine_ufu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaurix-dev%2Fturing_machine_ufu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaurix-dev%2Fturing_machine_ufu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68d44fb1283f561b13174109ffd7081416877016
[INFO] building laurix-dev/turing_machine_ufu 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%2Flaurix-dev%2Fturing_machine_ufu" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/laurix-dev/turing_machine_ufu 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/laurix-dev/turing_machine_ufu
[INFO] finished tweaking git repo https://github.com/laurix-dev/turing_machine_ufu
[INFO] tweaked toml for git repo https://github.com/laurix-dev/turing_machine_ufu written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/laurix-dev/turing_machine_ufu 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ae6a3b79191749735706b585af178d7a26c6d810243543942696ee9f2a539120
[INFO] running `Command { std: "docker" "start" "-a" "ae6a3b79191749735706b585af178d7a26c6d810243543942696ee9f2a539120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae6a3b79191749735706b585af178d7a26c6d810243543942696ee9f2a539120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae6a3b79191749735706b585af178d7a26c6d810243543942696ee9f2a539120", kill_on_drop: false }`
[INFO] [stdout] ae6a3b79191749735706b585af178d7a26c6d810243543942696ee9f2a539120
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] aebc0c242cac1562c9742078f4b9d0cdcb49d522d895d62f181bb74291850b38
[INFO] running `Command { std: "docker" "start" "-a" "aebc0c242cac1562c9742078f4b9d0cdcb49d522d895d62f181bb74291850b38", kill_on_drop: false }`
[INFO] [stderr]    Compiling text_io v0.1.12
[INFO] [stderr]    Compiling turing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `word` and `white_symbol` are never read
[INFO] [stdout]   --> src/tape.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Tape {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 16 |     pub word: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 17 |     pub white_symbol: char,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tape` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "aebc0c242cac1562c9742078f4b9d0cdcb49d522d895d62f181bb74291850b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aebc0c242cac1562c9742078f4b9d0cdcb49d522d895d62f181bb74291850b38", kill_on_drop: false }`
[INFO] [stdout] aebc0c242cac1562c9742078f4b9d0cdcb49d522d895d62f181bb74291850b38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8ced3e14b6475faf37a1746bb3fd84db758f090b039cc7e9d04b38370ec373a1
[INFO] running `Command { std: "docker" "start" "-a" "8ced3e14b6475faf37a1746bb3fd84db758f090b039cc7e9d04b38370ec373a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling turing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `word` and `white_symbol` are never read
[INFO] [stdout]   --> src/tape.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Tape {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 16 |     pub word: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 17 |     pub white_symbol: char,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tape` has a derived impl for the trait `Debug`, but this is 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 0.44s
[INFO] running `Command { std: "docker" "inspect" "8ced3e14b6475faf37a1746bb3fd84db758f090b039cc7e9d04b38370ec373a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ced3e14b6475faf37a1746bb3fd84db758f090b039cc7e9d04b38370ec373a1", kill_on_drop: false }`
[INFO] [stdout] 8ced3e14b6475faf37a1746bb3fd84db758f090b039cc7e9d04b38370ec373a1