[INFO] cloning repository https://github.com/vsamarth/rope
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vsamarth/rope" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvsamarth%2Frope", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvsamarth%2Frope'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a9ef586552e6c4403b94bf849404a9fba7fcc63
[INFO] checking vsamarth/rope against try#e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b for pr-144896
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvsamarth%2Frope" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vsamarth/rope
[INFO] finished tweaking git repo https://github.com/vsamarth/rope
[INFO] tweaked toml for git repo https://github.com/vsamarth/rope written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vsamarth/rope on toolchain e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vsamarth/rope 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" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e90bece24f73932d01ebac47cdfc4e9622aeaddd40285968e3f1472cee6dcff3
[INFO] running `Command { std: "docker" "start" "-a" "e90bece24f73932d01ebac47cdfc4e9622aeaddd40285968e3f1472cee6dcff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e90bece24f73932d01ebac47cdfc4e9622aeaddd40285968e3f1472cee6dcff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90bece24f73932d01ebac47cdfc4e9622aeaddd40285968e3f1472cee6dcff3", kill_on_drop: false }`
[INFO] [stdout] e90bece24f73932d01ebac47cdfc4e9622aeaddd40285968e3f1472cee6dcff3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92698d4a8fc916fee3779afdb52360666a315714561ae3abc79e8fd3dab72fb6
[INFO] running `Command { std: "docker" "start" "-a" "92698d4a8fc916fee3779afdb52360666a315714561ae3abc79e8fd3dab72fb6", kill_on_drop: false }`
[INFO] [stderr]     Checking rope v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::node::Node`
[INFO] [stdout]  --> src/tree/mod.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) use self::node::Node;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::node::Node`
[INFO] [stdout]  --> src/tree/mod.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) use self::node::Node;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/tree/node.rs:31:20
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn char(&self, index: usize) -> char {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/tree/node_leaf.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn insert(&mut self, index: usize, string: &str) {
[INFO] [stdout]    |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]   --> src/tree/node_leaf.rs:19:40
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn insert(&mut self, index: usize, string: &str) {
[INFO] [stdout]    |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]  --> src/tree/node.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Node {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NodeLeaf` is never constructed
[INFO] [stdout]  --> src/tree/node_leaf.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct NodeLeaf {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/tree/node.rs:31:20
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn char(&self, index: usize) -> char {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/tree/node_leaf.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn insert(&mut self, index: usize, string: &str) {
[INFO] [stdout]    |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]   --> src/tree/node_leaf.rs:19:40
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn insert(&mut self, index: usize, string: &str) {
[INFO] [stdout]    |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "92698d4a8fc916fee3779afdb52360666a315714561ae3abc79e8fd3dab72fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92698d4a8fc916fee3779afdb52360666a315714561ae3abc79e8fd3dab72fb6", kill_on_drop: false }`
[INFO] [stdout] 92698d4a8fc916fee3779afdb52360666a315714561ae3abc79e8fd3dab72fb6