[INFO] cloning repository https://github.com/meriy100/RustTutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meriy100/RustTutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeriy100%2FRustTutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeriy100%2FRustTutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b26a2763654c66e8f4ed777159a4054a8370345
[INFO] building meriy100/RustTutorial 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%2Fmeriy100%2FRustTutorial" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meriy100/RustTutorial 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/meriy100/RustTutorial
[INFO] finished tweaking git repo https://github.com/meriy100/RustTutorial
[INFO] tweaked toml for git repo https://github.com/meriy100/RustTutorial written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/meriy100/RustTutorial 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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f359b1a32281b41662696ac405987605acd8eb88b4fd8aa698f0cbdb8a6f14b9
[INFO] running `Command { std: "docker" "start" "-a" "f359b1a32281b41662696ac405987605acd8eb88b4fd8aa698f0cbdb8a6f14b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f359b1a32281b41662696ac405987605acd8eb88b4fd8aa698f0cbdb8a6f14b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f359b1a32281b41662696ac405987605acd8eb88b4fd8aa698f0cbdb8a6f14b9", kill_on_drop: false }`
[INFO] [stdout] f359b1a32281b41662696ac405987605acd8eb88b4fd8aa698f0cbdb8a6f14b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 59bb04eeb67a2da7f913e1cc30e947278f0752aad8bfb6f4b496ad9fc5f87610
[INFO] running `Command { std: "docker" "start" "-a" "59bb04eeb67a2da7f913e1cc30e947278f0752aad8bfb6f4b496ad9fc5f87610", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rust_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 190 |              _ => None
[INFO] [stdout]     |              ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 101 |              CommandType::Inc => {
[INFO] [stdout]     |              ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 110 |              CommandType::Dec => {
[INFO] [stdout]     |              ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 119 |              CommandType::PInc => {
[INFO] [stdout]     |              ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 127 |              CommandType::PDec => {
[INFO] [stdout]     |              ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 190 |              _ => None
[INFO] [stdout]     |              ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:181:18
[INFO] [stdout]     |
[INFO] [stdout] 181 |                  io::stdout().write(&[memory[pointer]]);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 181 |                  let _ = io::stdout().write(&[memory[pointer]]);
[INFO] [stdout]     |                  +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "59bb04eeb67a2da7f913e1cc30e947278f0752aad8bfb6f4b496ad9fc5f87610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59bb04eeb67a2da7f913e1cc30e947278f0752aad8bfb6f4b496ad9fc5f87610", kill_on_drop: false }`
[INFO] [stdout] 59bb04eeb67a2da7f913e1cc30e947278f0752aad8bfb6f4b496ad9fc5f87610
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 973a1cf20fb238876ba003a70f87949ed196d7ccc5d5184108d2a587dc8d5ebe
[INFO] running `Command { std: "docker" "start" "-a" "973a1cf20fb238876ba003a70f87949ed196d7ccc5d5184108d2a587dc8d5ebe", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 190 |              _ => None
[INFO] [stdout]     |              ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 101 |              CommandType::Inc => {
[INFO] [stdout]     |              ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 110 |              CommandType::Dec => {
[INFO] [stdout]     |              ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 119 |              CommandType::PInc => {
[INFO] [stdout]     |              ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 127 |              CommandType::PDec => {
[INFO] [stdout]     |              ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 190 |              _ => None
[INFO] [stdout]     |              ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:181:18
[INFO] [stdout]     |
[INFO] [stdout] 181 |                  io::stdout().write(&[memory[pointer]]);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 181 |                  let _ = io::stdout().write(&[memory[pointer]]);
[INFO] [stdout]     |                  +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "973a1cf20fb238876ba003a70f87949ed196d7ccc5d5184108d2a587dc8d5ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "973a1cf20fb238876ba003a70f87949ed196d7ccc5d5184108d2a587dc8d5ebe", kill_on_drop: false }`
[INFO] [stdout] 973a1cf20fb238876ba003a70f87949ed196d7ccc5d5184108d2a587dc8d5ebe