[INFO] cloning repository https://github.com/ikru92/rustlang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ikru92/rustlang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fikru92%2Frustlang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fikru92%2Frustlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16c7c067c64efd959b65683c5d0c9c718cd51caf
[INFO] building ikru92/rustlang 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%2Fikru92%2Frustlang" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ikru92/rustlang 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/ikru92/rustlang
[INFO] finished tweaking git repo https://github.com/ikru92/rustlang
[INFO] tweaked toml for git repo https://github.com/ikru92/rustlang written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ikru92/rustlang 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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 550eb1ec0888804c1bc991142f45cddd3cadd08bf5226437a3b97d4cb3a3aa79
[INFO] running `Command { std: "docker" "start" "-a" "550eb1ec0888804c1bc991142f45cddd3cadd08bf5226437a3b97d4cb3a3aa79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "550eb1ec0888804c1bc991142f45cddd3cadd08bf5226437a3b97d4cb3a3aa79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "550eb1ec0888804c1bc991142f45cddd3cadd08bf5226437a3b97d4cb3a3aa79", kill_on_drop: false }`
[INFO] [stdout] 550eb1ec0888804c1bc991142f45cddd3cadd08bf5226437a3b97d4cb3a3aa79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 59b62eaad55317c4d10ec087de24d91ed413edb31b2af62064c905bdc6077012
[INFO] running `Command { std: "docker" "start" "-a" "59b62eaad55317c4d10ec087de24d91ed413edb31b2af62064c905bdc6077012", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rust4dummy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `GuessGame` should have a snake case name
[INFO] [stdout]  --> src/guess_game.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn GuessGame(&self){
[INFO] [stdout]   |            ^^^^^^^^^ help: convert the identifier to snake case: `guess_game`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/guess_game.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             io::stdin().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] 12 |             let _ = io::stdin().read_line(&mut buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.64s
[INFO] running `Command { std: "docker" "inspect" "59b62eaad55317c4d10ec087de24d91ed413edb31b2af62064c905bdc6077012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59b62eaad55317c4d10ec087de24d91ed413edb31b2af62064c905bdc6077012", kill_on_drop: false }`
[INFO] [stdout] 59b62eaad55317c4d10ec087de24d91ed413edb31b2af62064c905bdc6077012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] cdb44cff9eb54a66cb17a62fedac150f2328784ff488d81c45ec5862d2e7f7d9
[INFO] running `Command { std: "docker" "start" "-a" "cdb44cff9eb54a66cb17a62fedac150f2328784ff488d81c45ec5862d2e7f7d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust4dummy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `GuessGame` should have a snake case name
[INFO] [stdout]  --> src/guess_game.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn GuessGame(&self){
[INFO] [stdout]   |            ^^^^^^^^^ help: convert the identifier to snake case: `guess_game`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/guess_game.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             io::stdin().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] 12 |             let _ = io::stdin().read_line(&mut buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "cdb44cff9eb54a66cb17a62fedac150f2328784ff488d81c45ec5862d2e7f7d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb44cff9eb54a66cb17a62fedac150f2328784ff488d81c45ec5862d2e7f7d9", kill_on_drop: false }`
[INFO] [stdout] cdb44cff9eb54a66cb17a62fedac150f2328784ff488d81c45ec5862d2e7f7d9