[INFO] cloning repository https://github.com/kolgx/Projec1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kolgx/Projec1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkolgx%2FProjec1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkolgx%2FProjec1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f753b38f71e2cf21e60d415dc1abb9c589f22ad
[INFO] building kolgx/Projec1 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%2Fkolgx%2FProjec1" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kolgx/Projec1 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/kolgx/Projec1
[INFO] finished tweaking git repo https://github.com/kolgx/Projec1
[INFO] tweaked toml for git repo https://github.com/kolgx/Projec1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kolgx/Projec1 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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 431e9f750577fe6620cb95084868380d81f62bb92fb74c5102ced8840dd3f494
[INFO] running `Command { std: "docker" "start" "-a" "431e9f750577fe6620cb95084868380d81f62bb92fb74c5102ced8840dd3f494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "431e9f750577fe6620cb95084868380d81f62bb92fb74c5102ced8840dd3f494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "431e9f750577fe6620cb95084868380d81f62bb92fb74c5102ced8840dd3f494", kill_on_drop: false }`
[INFO] [stdout] 431e9f750577fe6620cb95084868380d81f62bb92fb74c5102ced8840dd3f494
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ca673b66cf915c3e6e8a127ff1c116e60ecf8db9875d344bdc92928cbe2e5b9e
[INFO] running `Command { std: "docker" "start" "-a" "ca673b66cf915c3e6e8a127ff1c116e60ecf8db9875d344bdc92928cbe2e5b9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.11
[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 projec1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `left` and `right` are never read
[INFO] [stdout]   --> src/model/binary_tree_demo.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |         pub struct BinaryTreeNode<T> {
[INFO] [stdout]    |                    -------------- fields in this struct
[INFO] [stdout] 13 |             pub value: T,
[INFO] [stdout] 14 |             pub left: Option<Rc<RefCell<BinaryTreeNode<T>>>>,
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 15 |             pub right: Option<Rc<RefCell<BinaryTreeNode<T>>>>,
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BinaryTreeNode` 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] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/model/binary_tree_demo.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 18 |         impl<T> BinaryTreeNode<T> {
[INFO] [stdout]    |         ------------------------- associated function in this implementation
[INFO] [stdout] 19 |             pub fn new(value: T) -> BinaryTreeNode<T> {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.21s
[INFO] running `Command { std: "docker" "inspect" "ca673b66cf915c3e6e8a127ff1c116e60ecf8db9875d344bdc92928cbe2e5b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca673b66cf915c3e6e8a127ff1c116e60ecf8db9875d344bdc92928cbe2e5b9e", kill_on_drop: false }`
[INFO] [stdout] ca673b66cf915c3e6e8a127ff1c116e60ecf8db9875d344bdc92928cbe2e5b9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7d6d0904789c5861b1d6930924d64a92742f457220d19e5212c00d4b9acfd803
[INFO] running `Command { std: "docker" "start" "-a" "7d6d0904789c5861b1d6930924d64a92742f457220d19e5212c00d4b9acfd803", kill_on_drop: false }`
[INFO] [stderr]    Compiling projec1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `left` and `right` are never read
[INFO] [stdout]   --> src/model/binary_tree_demo.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |         pub struct BinaryTreeNode<T> {
[INFO] [stdout]    |                    -------------- fields in this struct
[INFO] [stdout] 13 |             pub value: T,
[INFO] [stdout] 14 |             pub left: Option<Rc<RefCell<BinaryTreeNode<T>>>>,
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 15 |             pub right: Option<Rc<RefCell<BinaryTreeNode<T>>>>,
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BinaryTreeNode` 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] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/model/binary_tree_demo.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 18 |         impl<T> BinaryTreeNode<T> {
[INFO] [stdout]    |         ------------------------- associated function in this implementation
[INFO] [stdout] 19 |             pub fn new(value: T) -> BinaryTreeNode<T> {
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "7d6d0904789c5861b1d6930924d64a92742f457220d19e5212c00d4b9acfd803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d6d0904789c5861b1d6930924d64a92742f457220d19e5212c00d4b9acfd803", kill_on_drop: false }`
[INFO] [stdout] 7d6d0904789c5861b1d6930924d64a92742f457220d19e5212c00d4b9acfd803