[INFO] cloning repository https://github.com/beard-programmer/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/beard-programmer/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeard-programmer%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeard-programmer%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1815cc69dd984c2540ab170efeaa135cbf541fb
[INFO] testing beard-programmer/rust_learn against try#17092ad00ed8fe1e7f81a7e38238ff70779034b1 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeard-programmer%2Frust_learn" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/beard-programmer/rust_learn on toolchain 17092ad00ed8fe1e7f81a7e38238ff70779034b1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/beard-programmer/rust_learn
[INFO] finished tweaking git repo https://github.com/beard-programmer/rust_learn
[INFO] tweaked toml for git repo https://github.com/beard-programmer/rust_learn written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/beard-programmer/rust_learn 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" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a904565a468a14628544c257eb155caea68b75ac0c9162eb4f1e3d228721f87b
[INFO] running `Command { std: "docker" "start" "-a" "a904565a468a14628544c257eb155caea68b75ac0c9162eb4f1e3d228721f87b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a904565a468a14628544c257eb155caea68b75ac0c9162eb4f1e3d228721f87b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a904565a468a14628544c257eb155caea68b75ac0c9162eb4f1e3d228721f87b", kill_on_drop: false }`
[INFO] [stdout] a904565a468a14628544c257eb155caea68b75ac0c9162eb4f1e3d228721f87b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddba0bb670242b7d15cb564012006307c2f43c3c63ff161a269639e0ca754785
[INFO] running `Command { std: "docker" "start" "-a" "ddba0bb670242b7d15cb564012006307c2f43c3c63ff161a269639e0ca754785", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling display_ownership v0.1.0 (/opt/rustwide/workdir/display_ownership)
[INFO] [stderr]    Compiling binary_tree v0.1.0 (/opt/rustwide/workdir/binary_tree)
[INFO] [stderr]    Compiling rectangle v0.1.0 (/opt/rustwide/workdir/rectangle)
[INFO] [stdout] warning: trait `NodesCountable` is never used
[INFO] [stdout]   --> binary_tree/src/lib.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait NodesCountable {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Gettable` is never used
[INFO] [stdout]   --> binary_tree/src/lib.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Gettable<T, A> {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `content` is never read
[INFO] [stdout]   --> src/blog.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct RejectedPost {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 15 |     content: String,
[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 3.53s
[INFO] running `Command { std: "docker" "inspect" "ddba0bb670242b7d15cb564012006307c2f43c3c63ff161a269639e0ca754785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddba0bb670242b7d15cb564012006307c2f43c3c63ff161a269639e0ca754785", kill_on_drop: false }`
[INFO] [stdout] ddba0bb670242b7d15cb564012006307c2f43c3c63ff161a269639e0ca754785
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52d1fd76ba86e668eef12f9d4a92ce0c9067f265bdc0cfb9b77e1f6ad663283e
[INFO] running `Command { std: "docker" "start" "-a" "52d1fd76ba86e668eef12f9d4a92ce0c9067f265bdc0cfb9b77e1f6ad663283e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `NodesCountable` is never used
[INFO] [stdout]   --> binary_tree/src/lib.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait NodesCountable {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Gettable` is never used
[INFO] [stdout]   --> binary_tree/src/lib.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait Gettable<T, A> {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `content` is never read
[INFO] [stdout]   --> src/blog.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct RejectedPost {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 15 |     content: String,
[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" "52d1fd76ba86e668eef12f9d4a92ce0c9067f265bdc0cfb9b77e1f6ad663283e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d1fd76ba86e668eef12f9d4a92ce0c9067f265bdc0cfb9b77e1f6ad663283e", kill_on_drop: false }`
[INFO] [stdout] 52d1fd76ba86e668eef12f9d4a92ce0c9067f265bdc0cfb9b77e1f6ad663283e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4160e636bff4ea9f40745dd75c93f54e2c8e9f2e093140b0cf63e6921b5141df
[INFO] running `Command { std: "docker" "start" "-a" "4160e636bff4ea9f40745dd75c93f54e2c8e9f2e093140b0cf63e6921b5141df", kill_on_drop: false }`
[INFO] [stderr] warning: trait `NodesCountable` is never used
[INFO] [stderr]   --> binary_tree/src/lib.rs:10:7
[INFO] [stderr]    |
[INFO] [stderr] 10 | trait NodesCountable {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Gettable` is never used
[INFO] [stderr]   --> binary_tree/src/lib.rs:26:7
[INFO] [stderr]    |
[INFO] [stderr] 26 | trait Gettable<T, A> {
[INFO] [stderr]    |       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `binary_tree` (lib) generated 2 warnings
[INFO] [stderr] warning: field `content` is never read
[INFO] [stderr]   --> src/blog.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct RejectedPost {
[INFO] [stderr]    |            ------------ field in this struct
[INFO] [stderr] 15 |     content: String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_learn` (bin "rust_learn" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_learn-9485f8a9f202df93)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4160e636bff4ea9f40745dd75c93f54e2c8e9f2e093140b0cf63e6921b5141df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4160e636bff4ea9f40745dd75c93f54e2c8e9f2e093140b0cf63e6921b5141df", kill_on_drop: false }`
[INFO] [stdout] 4160e636bff4ea9f40745dd75c93f54e2c8e9f2e093140b0cf63e6921b5141df