[INFO] cloning repository https://github.com/sagar-dimri/todo-app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sagar-dimri/todo-app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagar-dimri%2Ftodo-app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagar-dimri%2Ftodo-app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb5a243778f26a82acdb4d13fd43ba71a9528ac8
[INFO] checking sagar-dimri/todo-app against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagar-dimri%2Ftodo-app" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sagar-dimri/todo-app
[INFO] finished tweaking git repo https://github.com/sagar-dimri/todo-app
[INFO] tweaked toml for git repo https://github.com/sagar-dimri/todo-app written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sagar-dimri/todo-app on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sagar-dimri/todo-app 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34852c45c66850235668d97e932cbde20fd4cb60d3c87b2c73ec4811a7d276df
[INFO] running `Command { std: "docker" "start" "-a" "34852c45c66850235668d97e932cbde20fd4cb60d3c87b2c73ec4811a7d276df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34852c45c66850235668d97e932cbde20fd4cb60d3c87b2c73ec4811a7d276df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34852c45c66850235668d97e932cbde20fd4cb60d3c87b2c73ec4811a7d276df", kill_on_drop: false }`
[INFO] [stdout] 34852c45c66850235668d97e932cbde20fd4cb60d3c87b2c73ec4811a7d276df
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8645c7cbd6e32d655f69f9e6a83fcc8638d92fe40297259b51c43acb88ab3d33
[INFO] running `Command { std: "docker" "start" "-a" "8645c7cbd6e32d655f69f9e6a83fcc8638d92fe40297259b51c43acb88ab3d33", kill_on_drop: false }`
[INFO] [stderr]     Checking todo-app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/todo.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut data_file = OpenOptions::new()
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/todo.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut data_file = OpenOptions::new()
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `path_bak` are never read
[INFO] [stdout]  --> src/todo.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Todo {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     data: Vec<String>,
[INFO] [stdout] 6 |     path: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 7 |     path_bak: String
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sort` is never used
[INFO] [stdout]    --> src/todo.rs:202:12
[INFO] [stdout]     |
[INFO] [stdout] 10  | impl Todo {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 202 |     pub fn sort(&self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `path_bak` are never read
[INFO] [stdout]  --> src/todo.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Todo {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     data: Vec<String>,
[INFO] [stdout] 6 |     path: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 7 |     path_bak: String
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sort` is never used
[INFO] [stdout]    --> src/todo.rs:202:12
[INFO] [stdout]     |
[INFO] [stdout] 10  | impl Todo {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 202 |     pub fn sort(&self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "8645c7cbd6e32d655f69f9e6a83fcc8638d92fe40297259b51c43acb88ab3d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8645c7cbd6e32d655f69f9e6a83fcc8638d92fe40297259b51c43acb88ab3d33", kill_on_drop: false }`
[INFO] [stdout] 8645c7cbd6e32d655f69f9e6a83fcc8638d92fe40297259b51c43acb88ab3d33