[INFO] cloning repository https://github.com/AnthonyMBonafide/hangman-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnthonyMBonafide/hangman-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnthonyMBonafide%2Fhangman-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnthonyMBonafide%2Fhangman-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f1aabd11ec8b05a205263168a6c47dcebbd2506
[INFO] building AnthonyMBonafide/hangman-rs 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%2FAnthonyMBonafide%2Fhangman-rs" "/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/AnthonyMBonafide/hangman-rs 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/AnthonyMBonafide/hangman-rs
[INFO] finished tweaking git repo https://github.com/AnthonyMBonafide/hangman-rs
[INFO] tweaked toml for git repo https://github.com/AnthonyMBonafide/hangman-rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AnthonyMBonafide/hangman-rs 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]  Downloading crates ...
[INFO] [stderr]   Downloaded c2-chacha v0.2.3
[INFO] [stderr]   Downloaded atty v0.2.13
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.6
[INFO] [stderr]   Downloaded getrandom v0.1.13
[INFO] [stderr]   Downloaded rand v0.7.2
[INFO] [stderr]   Downloaded clap v2.33.0
[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] 8d88d552e1c6695828d68113786f2c9dc52f28af7e4bc507214cabdc21ee1cf9
[INFO] running `Command { std: "docker" "start" "-a" "8d88d552e1c6695828d68113786f2c9dc52f28af7e4bc507214cabdc21ee1cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d88d552e1c6695828d68113786f2c9dc52f28af7e4bc507214cabdc21ee1cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d88d552e1c6695828d68113786f2c9dc52f28af7e4bc507214cabdc21ee1cf9", kill_on_drop: false }`
[INFO] [stdout] 8d88d552e1c6695828d68113786f2c9dc52f28af7e4bc507214cabdc21ee1cf9
[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] 725ac1989bd1d6b3ab6825b71791976607fb912ef13f4147fd1ca988c5c329f0
[INFO] running `Command { std: "docker" "start" "-a" "725ac1989bd1d6b3ab6825b71791976607fb912ef13f4147fd1ca988c5c329f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling hangman-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::input`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use io::input;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::output`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use io::output;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::io::input`
[INFO] [stdout]  --> src/hangman.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::io::input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Normal` and `Hard` are never constructed
[INFO] [stdout]  --> src/configuration.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Difficulty {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 2 |     Easy,
[INFO] [stdout] 3 |     Normal,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Hard,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `File` and `GUI` are never constructed
[INFO] [stdout]   --> src/configuration.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum InputOutput {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 8  |     StdIn,
[INFO] [stdout] 9  |     File,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     GUI,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Redis` is never constructed
[INFO] [stdout]   --> src/configuration.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Database {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] 14 |     File,
[INFO] [stdout] 15 |     Redis,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `database` are never read
[INFO] [stdout]   --> src/configuration.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Configuration {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 20 |     difficulty: Difficulty,
[INFO] [stdout] 21 |     input: InputOutput,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     output: InputOutput,
[INFO] [stdout] 23 |     database: Database,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_output` is never used
[INFO] [stdout]   --> src/configuration.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Configuration {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn get_output(&self) -> &InputOutput {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `configuration` is never read
[INFO] [stdout]   --> src/hangman.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HangmanGame<R, W>
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     configuration: Configuration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/io/cli.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         handle.read_line(&mut buffer);
[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] 32 |         let _ = handle.read_line(&mut buffer);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "725ac1989bd1d6b3ab6825b71791976607fb912ef13f4147fd1ca988c5c329f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "725ac1989bd1d6b3ab6825b71791976607fb912ef13f4147fd1ca988c5c329f0", kill_on_drop: false }`
[INFO] [stdout] 725ac1989bd1d6b3ab6825b71791976607fb912ef13f4147fd1ca988c5c329f0
[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] 28410537f64bb2afc4eaf8f1b74110a797046ddc3b3ef29486e673daf75d91f8
[INFO] running `Command { std: "docker" "start" "-a" "28410537f64bb2afc4eaf8f1b74110a797046ddc3b3ef29486e673daf75d91f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling hangman-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::input`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use io::input;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::output`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use io::output;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::io::input`
[INFO] [stdout]  --> src/hangman.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::io::input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Normal` and `Hard` are never constructed
[INFO] [stdout]  --> src/configuration.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Difficulty {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 2 |     Easy,
[INFO] [stdout] 3 |     Normal,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Hard,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `File` and `GUI` are never constructed
[INFO] [stdout]   --> src/configuration.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum InputOutput {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 8  |     StdIn,
[INFO] [stdout] 9  |     File,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     GUI,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Redis` is never constructed
[INFO] [stdout]   --> src/configuration.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Database {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] 14 |     File,
[INFO] [stdout] 15 |     Redis,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input` and `database` are never read
[INFO] [stdout]   --> src/configuration.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Configuration {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 20 |     difficulty: Difficulty,
[INFO] [stdout] 21 |     input: InputOutput,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     output: InputOutput,
[INFO] [stdout] 23 |     database: Database,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_output` is never used
[INFO] [stdout]   --> src/configuration.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Configuration {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn get_output(&self) -> &InputOutput {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `configuration` is never read
[INFO] [stdout]   --> src/hangman.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HangmanGame<R, W>
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     configuration: Configuration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/io/cli.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         handle.read_line(&mut buffer);
[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] 32 |         let _ = handle.read_line(&mut buffer);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "28410537f64bb2afc4eaf8f1b74110a797046ddc3b3ef29486e673daf75d91f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28410537f64bb2afc4eaf8f1b74110a797046ddc3b3ef29486e673daf75d91f8", kill_on_drop: false }`
[INFO] [stdout] 28410537f64bb2afc4eaf8f1b74110a797046ddc3b3ef29486e673daf75d91f8