[INFO] cloning repository https://github.com/DollieSon/rust-prac
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DollieSon/rust-prac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDollieSon%2Frust-prac", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDollieSon%2Frust-prac'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f41d1aa726fbcdaf9e285ed10b9045dede399bad
[INFO] checking DollieSon/rust-prac/f41d1aa726fbcdaf9e285ed10b9045dede399bad against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDollieSon%2Frust-prac" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DollieSon/rust-prac on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DollieSon/rust-prac
[INFO] finished tweaking git repo https://github.com/DollieSon/rust-prac
[INFO] tweaked toml for git repo https://github.com/DollieSon/rust-prac written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DollieSon/rust-prac 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2626cb1a3c7a4e98b019aecc880b72e02a58c1668b4e87cd29e4e5b6b97f96f2
[INFO] running `Command { std: "docker" "start" "-a" "2626cb1a3c7a4e98b019aecc880b72e02a58c1668b4e87cd29e4e5b6b97f96f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2626cb1a3c7a4e98b019aecc880b72e02a58c1668b4e87cd29e4e5b6b97f96f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2626cb1a3c7a4e98b019aecc880b72e02a58c1668b4e87cd29e4e5b6b97f96f2", kill_on_drop: false }`
[INFO] [stdout] 2626cb1a3c7a4e98b019aecc880b72e02a58c1668b4e87cd29e4e5b6b97f96f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fabf3060cd675f4f3ab757a196abbcc2a230ce0c0c3d84fbec75e38f5430d437
[INFO] running `Command { std: "docker" "start" "-a" "fabf3060cd675f4f3ab757a196abbcc2a230ce0c0c3d84fbec75e38f5430d437", kill_on_drop: false }`
[INFO] [stderr]     Checking prop-cal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/trees/bin_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     tree::{self, Tree},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/trees/bin_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     tree::{self, Tree},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]   --> src/main.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn test2<T: Tree>() {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `invert_tree` and `invert_node` are never used
[INFO] [stdout]   --> src/trees/bin_tree.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl BinTree {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn invert_tree(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn invert_node(node: &mut Option<Box<Node>>) -> Option<Box<Node>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove_elem`, `get_depth`, and `print` are never used
[INFO] [stdout]  --> src/trees/tree.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Tree {
[INFO] [stdout]   |           ---- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4 |     fn remove_elem(&mut self, elem: i32);
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 5 |     fn get_depth(&self) -> i32;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn print(&self);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]   --> src/main.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn test2<T: Tree>() {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `invert_tree` and `invert_node` are never used
[INFO] [stdout]   --> src/trees/bin_tree.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl BinTree {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn invert_tree(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn invert_node(node: &mut Option<Box<Node>>) -> Option<Box<Node>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove_elem`, `get_depth`, and `print` are never used
[INFO] [stdout]  --> src/trees/tree.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Tree {
[INFO] [stdout]   |           ---- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4 |     fn remove_elem(&mut self, elem: i32);
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 5 |     fn get_depth(&self) -> i32;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn print(&self);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "fabf3060cd675f4f3ab757a196abbcc2a230ce0c0c3d84fbec75e38f5430d437", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fabf3060cd675f4f3ab757a196abbcc2a230ce0c0c3d84fbec75e38f5430d437", kill_on_drop: false }`
[INFO] [stdout] fabf3060cd675f4f3ab757a196abbcc2a230ce0c0c3d84fbec75e38f5430d437