[INFO] cloning repository https://github.com/Dmarcano/RustMazeSearch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dmarcano/RustMazeSearch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDmarcano%2FRustMazeSearch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDmarcano%2FRustMazeSearch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f53378f425494033de77c488499c351a68117f3e
[INFO] building Dmarcano/RustMazeSearch against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDmarcano%2FRustMazeSearch" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dmarcano/RustMazeSearch on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Dmarcano/RustMazeSearch
[INFO] finished tweaking git repo https://github.com/Dmarcano/RustMazeSearch
[INFO] tweaked toml for git repo https://github.com/Dmarcano/RustMazeSearch written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Dmarcano/RustMazeSearch 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5bfb9cdf6fdab122b2d198acbbb29bd46ae5d393eb483bc0b142b1e637ac435
[INFO] running `Command { std: "docker" "start" "-a" "e5bfb9cdf6fdab122b2d198acbbb29bd46ae5d393eb483bc0b142b1e637ac435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5bfb9cdf6fdab122b2d198acbbb29bd46ae5d393eb483bc0b142b1e637ac435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5bfb9cdf6fdab122b2d198acbbb29bd46ae5d393eb483bc0b142b1e637ac435", kill_on_drop: false }`
[INFO] [stdout] e5bfb9cdf6fdab122b2d198acbbb29bd46ae5d393eb483bc0b142b1e637ac435
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b4f8c9fba121ca899a9272343d6ebf1fc6b0a85666b1f2e10209b15aeee3855
[INFO] running `Command { std: "docker" "start" "-a" "0b4f8c9fba121ca899a9272343d6ebf1fc6b0a85666b1f2e10209b15aeee3855", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling termion v1.5.5
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rust_maze_search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/maze_solver/display.rs:14:62
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<'a> MazePositionDisplay<'a> { 
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 14 |     pub fn new(maze :  &'a MazePositionMaze, delay : u64) -> MazePositionDisplay {
[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: method `get_end` is never used
[INFO] [stdout]   --> src/maze_solver/maze/mod.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub trait Maze<T> {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get_end(&self) -> &T;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "0b4f8c9fba121ca899a9272343d6ebf1fc6b0a85666b1f2e10209b15aeee3855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b4f8c9fba121ca899a9272343d6ebf1fc6b0a85666b1f2e10209b15aeee3855", kill_on_drop: false }`
[INFO] [stdout] 0b4f8c9fba121ca899a9272343d6ebf1fc6b0a85666b1f2e10209b15aeee3855
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41616ae7c47b30903124521fbc590cbb1e7599cdb674173cd2fe952440f93265
[INFO] running `Command { std: "docker" "start" "-a" "41616ae7c47b30903124521fbc590cbb1e7599cdb674173cd2fe952440f93265", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_maze_search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/maze_solver/display.rs:14:62
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<'a> MazePositionDisplay<'a> { 
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 14 |     pub fn new(maze :  &'a MazePositionMaze, delay : u64) -> MazePositionDisplay {
[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: method `get_end` is never used
[INFO] [stdout]   --> src/maze_solver/maze/mod.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub trait Maze<T> {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get_end(&self) -> &T;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "41616ae7c47b30903124521fbc590cbb1e7599cdb674173cd2fe952440f93265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41616ae7c47b30903124521fbc590cbb1e7599cdb674173cd2fe952440f93265", kill_on_drop: false }`
[INFO] [stdout] 41616ae7c47b30903124521fbc590cbb1e7599cdb674173cd2fe952440f93265