[INFO] cloning repository https://github.com/ipe-dev/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ipe-dev/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fipe-dev%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fipe-dev%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 911bd7154d14b201c035661f5c071ef51af96f5e
[INFO] building ipe-dev/rust 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%2Fipe-dev%2Frust" "/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/ipe-dev/rust 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/ipe-dev/rust
[INFO] finished tweaking git repo https://github.com/ipe-dev/rust
[INFO] tweaked toml for git repo https://github.com/ipe-dev/rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ipe-dev/rust 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]     Updating git repository `https://github.com/ipe-dev/lib_demo`
[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] a5f8caca9b04498a25ed7147ed5df373a19d5b949bc8522a3e3b9e9f0a1cb509
[INFO] running `Command { std: "docker" "start" "-a" "a5f8caca9b04498a25ed7147ed5df373a19d5b949bc8522a3e3b9e9f0a1cb509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f8caca9b04498a25ed7147ed5df373a19d5b949bc8522a3e3b9e9f0a1cb509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f8caca9b04498a25ed7147ed5df373a19d5b949bc8522a3e3b9e9f0a1cb509", kill_on_drop: false }`
[INFO] [stdout] a5f8caca9b04498a25ed7147ed5df373a19d5b949bc8522a3e3b9e9f0a1cb509
[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] ecfd602910cdc0ad7a1e322758425815fb6ce847e5252d9f70cab7a4b45656be
[INFO] running `Command { std: "docker" "start" "-a" "ecfd602910cdc0ad7a1e322758425815fb6ce847e5252d9f70cab7a4b45656be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.143
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.9
[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 lib_demo v0.1.0 (https://github.com/ipe-dev/lib_demo#98b03b65)
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/error_handling.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division_option` is never used
[INFO] [stdout]   --> src/error_handling.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn division_option(x: f64, y: f64) -> Option<f64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division_result` is never used
[INFO] [stdout]   --> src/error_handling.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn division_result(x: f64, y: f64) -> Result<f64, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/error_handling.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn sum(a: &[i32]) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/unit_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `compare_area` is never used
[INFO] [stdout]  --> src/unit_test.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Rectangle {
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 6 |     fn compare_area(&self, other: &Rectangle) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double_value` is never used
[INFO] [stdout]   --> src/unit_test.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn double_value(a: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greeting` is never used
[INFO] [stdout]   --> src/unit_test.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn greeting(name: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `Command { std: "docker" "inspect" "ecfd602910cdc0ad7a1e322758425815fb6ce847e5252d9f70cab7a4b45656be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecfd602910cdc0ad7a1e322758425815fb6ce847e5252d9f70cab7a4b45656be", kill_on_drop: false }`
[INFO] [stdout] ecfd602910cdc0ad7a1e322758425815fb6ce847e5252d9f70cab7a4b45656be
[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] 82ff7112ea6ccd7e6a5f1be2169db98a4374788db2ecea1e0a782fae47ecae02
[INFO] running `Command { std: "docker" "start" "-a" "82ff7112ea6ccd7e6a5f1be2169db98a4374788db2ecea1e0a782fae47ecae02", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/error_handling.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division_option` is never used
[INFO] [stdout]   --> src/error_handling.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn division_option(x: f64, y: f64) -> Option<f64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division_result` is never used
[INFO] [stdout]   --> src/error_handling.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn division_result(x: f64, y: f64) -> Result<f64, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/error_handling.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn sum(a: &[i32]) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "82ff7112ea6ccd7e6a5f1be2169db98a4374788db2ecea1e0a782fae47ecae02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82ff7112ea6ccd7e6a5f1be2169db98a4374788db2ecea1e0a782fae47ecae02", kill_on_drop: false }`
[INFO] [stdout] 82ff7112ea6ccd7e6a5f1be2169db98a4374788db2ecea1e0a782fae47ecae02