[INFO] cloning repository https://github.com/t4p-community/20240419_rust-for-python-programmers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t4p-community/20240419_rust-for-python-programmers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft4p-community%2F20240419_rust-for-python-programmers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft4p-community%2F20240419_rust-for-python-programmers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d38535f53a45608ffb7bdbe73fb1d0607385d631
[INFO] checking t4p-community/20240419_rust-for-python-programmers against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft4p-community%2F20240419_rust-for-python-programmers" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/t4p-community/20240419_rust-for-python-programmers on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/t4p-community/20240419_rust-for-python-programmers
[INFO] finished tweaking git repo https://github.com/t4p-community/20240419_rust-for-python-programmers
[INFO] tweaked toml for git repo https://github.com/t4p-community/20240419_rust-for-python-programmers written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/t4p-community/20240419_rust-for-python-programmers 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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a490af967d9be6267c236fcbac3452d37f62077e27988a9c2fac1272d9188fc
[INFO] running `Command { std: "docker" "start" "-a" "3a490af967d9be6267c236fcbac3452d37f62077e27988a9c2fac1272d9188fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a490af967d9be6267c236fcbac3452d37f62077e27988a9c2fac1272d9188fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a490af967d9be6267c236fcbac3452d37f62077e27988a9c2fac1272d9188fc", kill_on_drop: false }`
[INFO] [stdout] 3a490af967d9be6267c236fcbac3452d37f62077e27988a9c2fac1272d9188fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5eb950147240389a0d9c33ec3a69680561b60148493743d68e0cbd9739feb04e
[INFO] running `Command { std: "docker" "start" "-a" "5eb950147240389a0d9c33ec3a69680561b60148493743d68e0cbd9739feb04e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.198
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking xml-rs v0.8.20
[INFO] [stderr]     Checking exercise_02_solution v0.1.0 (/opt/rustwide/workdir/exercises/exercise_02/solution)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_02/solution/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking color_impl v0.1.0 (/opt/rustwide/workdir/demos_rust/07_color_impl)
[INFO] [stderr]     Checking vector v0.1.0 (/opt/rustwide/workdir/demos_rust/09_vector)
[INFO] [stderr]     Checking color_struct v0.1.0 (/opt/rustwide/workdir/demos_rust/06_color_struct)
[INFO] [stderr]     Checking generic_function v0.1.0 (/opt/rustwide/workdir/demos_rust/13_generic_function)
[INFO] [stderr]     Checking command_loop v0.1.0 (/opt/rustwide/workdir/demos_rust/10_command_loop)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_02/solution/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking range v0.1.0 (/opt/rustwide/workdir/demos_rust/14_range)
[INFO] [stderr]     Checking exercise_01_solution v0.1.0 (/opt/rustwide/workdir/exercises/exercise_01/solution)
[INFO] [stderr]     Checking console_input v0.1.0 (/opt/rustwide/workdir/demos_rust/02_console_input)
[INFO] [stderr]     Checking color_tool v0.1.0 (/opt/rustwide/workdir/demos_rust/11_color_tool)
[INFO] [stderr]     Checking exercise_04_end v0.1.0 (/opt/rustwide/workdir/exercises/exercise_04/end)
[INFO] [stderr]     Checking shopping_cart v0.1.0 (/opt/rustwide/workdir/demos_rust/15_shopping_cart)
[INFO] [stderr]     Checking exercise_03_end v0.1.0 (/opt/rustwide/workdir/exercises/exercise_03/end)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_04/end/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_03/end/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking modules v0.1.0 (/opt/rustwide/workdir/demos_rust/08_modules)
[INFO] [stderr]     Checking color_tool_refactor v0.1.0 (/opt/rustwide/workdir/demos_rust/12_color_tool_refactor)
[INFO] [stderr]     Checking exercise_03_solution v0.1.0 (/opt/rustwide/workdir/exercises/exercise_03/solution)
[INFO] [stderr]     Checking exercise_03_begin v0.1.0 (/opt/rustwide/workdir/exercises/exercise_03/begin)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> demos_rust/12_color_tool_refactor/src/command_loop.rs:13:46
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 13 |     pub fn new(app: &'a mut ColorToolApp) -> CommandLoop {
[INFO] [stdout]    |                                              ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_03/solution/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_03/begin/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking exercise_02_end v0.1.0 (/opt/rustwide/workdir/exercises/exercise_02/end)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_04/end/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking exercise_04_begin v0.1.0 (/opt/rustwide/workdir/exercises/exercise_04/begin)
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir/demos_rust/01_hello_world)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_03/end/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_03/solution/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_04/begin/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking exercise_02_begin v0.1.0 (/opt/rustwide/workdir/exercises/exercise_02/begin)
[INFO] [stderr]     Checking int_input v0.1.0 (/opt/rustwide/workdir/demos_rust/04_int_input)
[INFO] [stderr]     Checking int_input_enhanced v0.1.0 (/opt/rustwide/workdir/demos_rust/05_int_input_enhanced)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_03/begin/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking error_handling v0.1.0 (/opt/rustwide/workdir/demos_rust/03_error_handling)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_04/begin/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> demos_rust/12_color_tool_refactor/src/command_loop.rs:13:46
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 13 |     pub fn new(app: &'a mut ColorToolApp) -> CommandLoop {
[INFO] [stdout]    |                                              ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking xmltree v0.10.3
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.198
[INFO] [stderr]     Checking json_file_refactor v0.1.0 (/opt/rustwide/workdir/demos_rust/17_json_file_refactor)
[INFO] [stderr]     Checking json_file v0.1.0 (/opt/rustwide/workdir/demos_rust/16_json_file)
[INFO] [stderr]     Checking exercise_04_solution v0.1.0 (/opt/rustwide/workdir/exercises/exercise_04/solution)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_04/solution/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> exercises/exercise_04/solution/src/command_loop.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<'a> CommandLoop<'a> {
[INFO] [stdout]   |      -- lifetime `'a` declared here
[INFO] [stdout] 9 |     pub fn new(app: &'a mut CarToolApp) -> CommandLoop {
[INFO] [stdout]   |                                            ^^^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.25s
[INFO] running `Command { std: "docker" "inspect" "5eb950147240389a0d9c33ec3a69680561b60148493743d68e0cbd9739feb04e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eb950147240389a0d9c33ec3a69680561b60148493743d68e0cbd9739feb04e", kill_on_drop: false }`
[INFO] [stdout] 5eb950147240389a0d9c33ec3a69680561b60148493743d68e0cbd9739feb04e