[INFO] fetching crate wysgy_core 0.1.5...
[INFO] checking wysgy_core-0.1.5 against beta for pr-78714
[INFO] extracting crate wysgy_core 0.1.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate wysgy_core 0.1.5 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wysgy_core 0.1.5
[INFO] finished tweaking crates.io crate wysgy_core 0.1.5
[INFO] tweaked toml for crates.io crate wysgy_core 0.1.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e2bac68483a29fe51222b7fb63eab94da2034df73c714d99e2340c35b3c8ce5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3e2bac68483a29fe51222b7fb63eab94da2034df73c714d99e2340c35b3c8ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e2bac68483a29fe51222b7fb63eab94da2034df73c714d99e2340c35b3c8ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e2bac68483a29fe51222b7fb63eab94da2034df73c714d99e2340c35b3c8ce5", kill_on_drop: false }`
[INFO] [stdout] 3e2bac68483a29fe51222b7fb63eab94da2034df73c714d99e2340c35b3c8ce5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faa22a262abdd2e839c12bb04a93209019b03423dc2d316843c9b27d64da7a18
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "faa22a262abdd2e839c12bb04a93209019b03423dc2d316843c9b27d64da7a18", kill_on_drop: false }`
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking serde-value v0.5.3
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]     Checking wysgy_core v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:41:63
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn editor(fname: &str, editor: &str) -> Result<Child, Box<error::Error>> {
[INFO] [stdout]    |                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:47:61
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn file_to_string(fname: &String) -> Result<String, Box<error::Error>> {
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:66:58
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn file_to_dict(fname: &String) -> Result<Value, Box<error::Error>> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:72:64
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn existing_file_node(fname: &String) -> Result<Value, Box<error::Error>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:180:59
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn create_dir(&self, name: &String) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:208:56
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn create(name: String) -> Result<Project, Box<error::Error>> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:234:54
[INFO] [stdout]     |
[INFO] [stdout] 234 |     pub fn open(name: String) -> Result<Project, Box<error::Error>> {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:251:67
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn add_json_node(&self, label: &String) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:268:25
[INFO] [stdout]     |
[INFO] [stdout] 268 |     ) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:282:83
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn add_file_node(&self, label: &String, fname: &String) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:332:20
[INFO] [stdout]     |
[INFO] [stdout] 332 |         label_cb: &Fn(PathBuf) -> (String, String),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(PathBuf) -> (String, String)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:416:25
[INFO] [stdout]     |
[INFO] [stdout] 416 |     ) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:455:74
[INFO] [stdout]     |
[INFO] [stdout] 455 |     pub fn nodes_list(&self, t: Option<String>) -> Result<Vec<Node>, Box<error::Error>> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:472:72
[INFO] [stdout]     |
[INFO] [stdout] 472 |     pub fn rels_list(&self, t: Option<Value>) -> Result<Vec<Node>, Box<error::Error>> {
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:488:57
[INFO] [stdout]     |
[INFO] [stdout] 488 |     pub fn types_list(&self) -> Result<Vec<String>, Box<error::Error>> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:504:44
[INFO] [stdout]     |
[INFO] [stdout] 504 |     pub fn export(&self) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:41:63
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn editor(fname: &str, editor: &str) -> Result<Child, Box<error::Error>> {
[INFO] [stdout]    |                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:47:61
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn file_to_string(fname: &String) -> Result<String, Box<error::Error>> {
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:66:58
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn file_to_dict(fname: &String) -> Result<Value, Box<error::Error>> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:72:64
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn existing_file_node(fname: &String) -> Result<Value, Box<error::Error>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:180:59
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn create_dir(&self, name: &String) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:208:56
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn create(name: String) -> Result<Project, Box<error::Error>> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:234:54
[INFO] [stdout]     |
[INFO] [stdout] 234 |     pub fn open(name: String) -> Result<Project, Box<error::Error>> {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:251:67
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn add_json_node(&self, label: &String) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:268:25
[INFO] [stdout]     |
[INFO] [stdout] 268 |     ) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:282:83
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn add_file_node(&self, label: &String, fname: &String) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:332:20
[INFO] [stdout]     |
[INFO] [stdout] 332 |         label_cb: &Fn(PathBuf) -> (String, String),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(PathBuf) -> (String, String)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:416:25
[INFO] [stdout]     |
[INFO] [stdout] 416 |     ) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:455:74
[INFO] [stdout]     |
[INFO] [stdout] 455 |     pub fn nodes_list(&self, t: Option<String>) -> Result<Vec<Node>, Box<error::Error>> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:472:72
[INFO] [stdout]     |
[INFO] [stdout] 472 |     pub fn rels_list(&self, t: Option<Value>) -> Result<Vec<Node>, Box<error::Error>> {
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:488:57
[INFO] [stdout]     |
[INFO] [stdout] 488 |     pub fn types_list(&self) -> Result<Vec<String>, Box<error::Error>> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:504:44
[INFO] [stdout]     |
[INFO] [stdout] 504 |     pub fn export(&self) -> Result<(), Box<error::Error>> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:485:33
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Ok(rels.iter().map(|(a, b)| a.clone()).collect::<Vec<Node>>())
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rels_path`
[INFO] [stdout]    --> src/lib.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |         let rels_path = self.nodes_dir().to_str().unwrap().to_string();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rels_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:485:33
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Ok(rels.iter().map(|(a, b)| a.clone()).collect::<Vec<Node>>())
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rels_path`
[INFO] [stdout]    --> src/lib.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |         let rels_path = self.nodes_dir().to_str().unwrap().to_string();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rels_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:475:13
[INFO] [stdout]     |
[INFO] [stdout] 475 |         let mut rels = self.fetch_nodes(rels_glob, &t, &|p: PathBuf| {
[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/lib.rs:475:13
[INFO] [stdout]     |
[INFO] [stdout] 475 |         let mut rels = self.fetch_nodes(rels_glob, &t, &|p: PathBuf| {
[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: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:538:9
[INFO] [stdout]     |
[INFO] [stdout] 538 |         fs::write(format!("{}.json", stem), jstr);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:538:9
[INFO] [stdout]     |
[INFO] [stdout] 538 |         fs::write(format!("{}.json", stem), jstr);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> tests/project.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |             p.delete();
[INFO] [stdout]   |             ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Project::create(String::from("test2_notes_proj"));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             p.add_json_node(&String::from("node1"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             p.delete();
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Project::create(String::from("test3_notes_proj"));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             p.delete();
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     Project::create(String::from("test4_notes_proj"));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             p.add_json_node(&String::from("node1"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             p.add_json_node(&String::from("node2"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/project.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |             p.delete();
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "faa22a262abdd2e839c12bb04a93209019b03423dc2d316843c9b27d64da7a18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faa22a262abdd2e839c12bb04a93209019b03423dc2d316843c9b27d64da7a18", kill_on_drop: false }`
[INFO] [stdout] faa22a262abdd2e839c12bb04a93209019b03423dc2d316843c9b27d64da7a18