[INFO] cloning repository https://github.com/mlhoutel/amazing_maze
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mlhoutel/amazing_maze" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlhoutel%2Famazing_maze", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlhoutel%2Famazing_maze'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74e96de8710b0290d998ec8f77f31db7d4f252e1
[INFO] checking mlhoutel/amazing_maze against try#39605810efb1a0d52f955bfba9e4eec7a01d5deb for pr-153692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlhoutel%2Famazing_maze" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mlhoutel/amazing_maze
[INFO] finished tweaking git repo https://github.com/mlhoutel/amazing_maze
[INFO] tweaked toml for git repo https://github.com/mlhoutel/amazing_maze written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mlhoutel/amazing_maze on toolchain 39605810efb1a0d52f955bfba9e4eec7a01d5deb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mlhoutel/amazing_maze 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" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14b6865958bcb77ed6554bde90969cff8383eea4f097de270855be1b7d44dce2
[INFO] running `Command { std: "docker" "start" "-a" "14b6865958bcb77ed6554bde90969cff8383eea4f097de270855be1b7d44dce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14b6865958bcb77ed6554bde90969cff8383eea4f097de270855be1b7d44dce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14b6865958bcb77ed6554bde90969cff8383eea4f097de270855be1b7d44dce2", kill_on_drop: false }`
[INFO] [stdout] 14b6865958bcb77ed6554bde90969cff8383eea4f097de270855be1b7d44dce2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b762a66d79719d2ead92823f6e6189c157e89c1035bbcae9db921fec18b4c07d
[INFO] running `Command { std: "docker" "start" "-a" "b762a66d79719d2ead92823f6e6189c157e89c1035bbcae9db921fec18b4c07d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling syn v1.0.93
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling darling_core v0.14.1
[INFO] [stderr]    Compiling darling_macro v0.14.1
[INFO] [stderr]    Compiling darling v0.14.1
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking derive_builder v0.11.2
[INFO] [stderr]     Checking amazing_maze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/maze/maze.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn explore(self: &Maze) -> Vec<String> {
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout]    = note: `#[deny(self_lifetime_elision_not_applicable)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/maze/maze.rs:59:28
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn explore_trace(self: &Maze, trace: &mut Vec<String>) {
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `explore` and `explore_trace` are never used
[INFO] [stdout]   --> src/maze/maze.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Maze {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 22 |     pub fn explore(self: &Maze) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn explore_trace(self: &Maze, trace: &mut Vec<String>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/maze/maze.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn explore(self: &Maze) -> Vec<String> {
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout]    = note: `#[deny(self_lifetime_elision_not_applicable)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/maze/maze.rs:59:28
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn explore_trace(self: &Maze, trace: &mut Vec<String>) {
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amazing_maze` (bin "amazing_maze") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: methods `explore` and `explore_trace` are never used
[INFO] [stdout]   --> src/maze/maze.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Maze {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 22 |     pub fn explore(self: &Maze) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn explore_trace(self: &Maze, trace: &mut Vec<String>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amazing_maze` (bin "amazing_maze" test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b762a66d79719d2ead92823f6e6189c157e89c1035bbcae9db921fec18b4c07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b762a66d79719d2ead92823f6e6189c157e89c1035bbcae9db921fec18b4c07d", kill_on_drop: false }`
[INFO] [stdout] b762a66d79719d2ead92823f6e6189c157e89c1035bbcae9db921fec18b4c07d