[INFO] cloning repository https://github.com/Jaco26/playing-with-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jaco26/playing-with-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Fplaying-with-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Fplaying-with-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f52c2a75bb27da4f1d10e8a5210165adec4db3d3
[INFO] checking Jaco26/playing-with-rust against try#7306d3110618f84a6a4662b9e2cc4fd0d9b02da8 for pr-97346
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaco26%2Fplaying-with-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jaco26/playing-with-rust on toolchain 7306d3110618f84a6a4662b9e2cc4fd0d9b02da8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7306d3110618f84a6a4662b9e2cc4fd0d9b02da8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jaco26/playing-with-rust
[INFO] finished tweaking git repo https://github.com/Jaco26/playing-with-rust
[INFO] tweaked toml for git repo https://github.com/Jaco26/playing-with-rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Jaco26/playing-with-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7306d3110618f84a6a4662b9e2cc4fd0d9b02da8" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+7306d3110618f84a6a4662b9e2cc4fd0d9b02da8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23d266464309683d718f2c9c951c74b7f544dfba28074d4e22bfef5678616971
[INFO] running `Command { std: "docker" "start" "-a" "23d266464309683d718f2c9c951c74b7f544dfba28074d4e22bfef5678616971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23d266464309683d718f2c9c951c74b7f544dfba28074d4e22bfef5678616971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d266464309683d718f2c9c951c74b7f544dfba28074d4e22bfef5678616971", kill_on_drop: false }`
[INFO] [stdout] 23d266464309683d718f2c9c951c74b7f544dfba28074d4e22bfef5678616971
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+7306d3110618f84a6a4662b9e2cc4fd0d9b02da8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29a0775fd1eb9ee960a1d50729fd4a94fcba5c22d9720141c43e44d3f0cb55e7
[INFO] running `Command { std: "docker" "start" "-a" "29a0775fd1eb9ee960a1d50729fd4a94fcba5c22d9720141c43e44d3f0cb55e7", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking todo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/arguments.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |   action: Box<Fn()>,
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 -   action: Box<Fn()>,
[INFO] [stdout] 5 +   action: Box<dyn Fn()>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arguments.rs:18:56
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stdout]    |                                                        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 -   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stdout] 18 +   pub fn add_arg(&mut self, pattern: &str, action: Box<dyn Fn()>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/arguments.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |   action: Box<Fn()>,
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 -   action: Box<Fn()>,
[INFO] [stdout] 5 +   action: Box<dyn Fn()>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arguments.rs:18:56
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stdout]    |                                                        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 -   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stdout] 18 +   pub fn add_arg(&mut self, pattern: &str, action: Box<dyn Fn()>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/arguments.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/arguments.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `format_pretty`
[INFO] [stdout]   --> src/todo_item.rs:64:10
[INFO] [stdout]    |
[INFO] [stdout] 64 |   pub fn format_pretty(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Arg`
[INFO] [stdout]  --> src/arguments.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Arg {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Arguments`
[INFO] [stdout]  --> src/arguments.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Arguments {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/arguments.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn new() -> Arguments {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_arg`
[INFO] [stdout]   --> src/arguments.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_args`
[INFO] [stdout]   --> src/arguments.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `format_pretty`
[INFO] [stdout]   --> src/todo_item.rs:64:10
[INFO] [stdout]    |
[INFO] [stdout] 64 |   pub fn format_pretty(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Arg`
[INFO] [stdout]  --> src/arguments.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Arg {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Arguments`
[INFO] [stdout]  --> src/arguments.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Arguments {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/arguments.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn new() -> Arguments {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_arg`
[INFO] [stdout]   --> src/arguments.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_args`
[INFO] [stdout]   --> src/arguments.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.79s
[INFO] running `Command { std: "docker" "inspect" "29a0775fd1eb9ee960a1d50729fd4a94fcba5c22d9720141c43e44d3f0cb55e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29a0775fd1eb9ee960a1d50729fd4a94fcba5c22d9720141c43e44d3f0cb55e7", kill_on_drop: false }`
[INFO] [stdout] 29a0775fd1eb9ee960a1d50729fd4a94fcba5c22d9720141c43e44d3f0cb55e7