[INFO] cloning repository https://github.com/BB20101997/Learning-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BB20101997/Learning-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBB20101997%2FLearning-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBB20101997%2FLearning-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac8c6c29835a3adc002954126d779d856799db34
[INFO] testing BB20101997/Learning-Rust against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBB20101997%2FLearning-Rust" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BB20101997/Learning-Rust on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BB20101997/Learning-Rust
[INFO] finished tweaking git repo https://github.com/BB20101997/Learning-Rust
[INFO] tweaked toml for git repo https://github.com/BB20101997/Learning-Rust written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/BB20101997/Learning-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62fe694d5a7719a13c9072abc05e15d6acedd87a41fa1f799f801ead0ad0b62c
[INFO] running `Command { std: "docker" "start" "-a" "62fe694d5a7719a13c9072abc05e15d6acedd87a41fa1f799f801ead0ad0b62c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62fe694d5a7719a13c9072abc05e15d6acedd87a41fa1f799f801ead0ad0b62c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62fe694d5a7719a13c9072abc05e15d6acedd87a41fa1f799f801ead0ad0b62c", kill_on_drop: false }`
[INFO] [stdout] 62fe694d5a7719a13c9072abc05e15d6acedd87a41fa1f799f801ead0ad0b62c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edd8ec4a572e495ada8d04733aef581f9a5417ca232f49f9b42bb90b105ec9dc
[INFO] running `Command { std: "docker" "start" "-a" "edd8ec4a572e495ada8d04733aef581f9a5417ca232f49f9b42bb90b105ec9dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]    Compiling base_lib v0.1.0 (/opt/rustwide/workdir/base_lib)
[INFO] [stderr]    Compiling network_lib v0.1.0 (/opt/rustwide/workdir/network_lib)
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chat_base v0.1.0 (/opt/rustwide/workdir/chat_base)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling macros_test v0.1.0 (/opt/rustwide/workdir/macros_test)
[INFO] [stderr]    Compiling chat_client v0.1.0 (/opt/rustwide/workdir/chat_client)
[INFO] [stderr]    Compiling chat_server v0.1.0 (/opt/rustwide/workdir/chat_server)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 14s
[INFO] running `Command { std: "docker" "inspect" "edd8ec4a572e495ada8d04733aef581f9a5417ca232f49f9b42bb90b105ec9dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edd8ec4a572e495ada8d04733aef581f9a5417ca232f49f9b42bb90b105ec9dc", kill_on_drop: false }`
[INFO] [stdout] edd8ec4a572e495ada8d04733aef581f9a5417ca232f49f9b42bb90b105ec9dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b69b8687ffe89a0eed5d434bcd8bfbc5e42d1ffc7411a98dbceb2395c4675cd0
[INFO] running `Command { std: "docker" "start" "-a" "b69b8687ffe89a0eed5d434bcd8bfbc5e42d1ffc7411a98dbceb2395c4675cd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]    Compiling base_lib v0.1.0 (/opt/rustwide/workdir/base_lib)
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling network_lib v0.1.0 (/opt/rustwide/workdir/network_lib)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chat_base v0.1.0 (/opt/rustwide/workdir/chat_base)
[INFO] [stderr]    Compiling macros_test v0.1.0 (/opt/rustwide/workdir/macros_test)
[INFO] [stderr]    Compiling chat_client v0.1.0 (/opt/rustwide/workdir/chat_client)
[INFO] [stderr]    Compiling chat_server v0.1.0 (/opt/rustwide/workdir/chat_server)
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "b69b8687ffe89a0eed5d434bcd8bfbc5e42d1ffc7411a98dbceb2395c4675cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b69b8687ffe89a0eed5d434bcd8bfbc5e42d1ffc7411a98dbceb2395c4675cd0", kill_on_drop: false }`
[INFO] [stdout] b69b8687ffe89a0eed5d434bcd8bfbc5e42d1ffc7411a98dbceb2395c4675cd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0af806341ef18600ecbefbc1f4212866042bbdf7358111902b840a0c1a79d34f
[INFO] running `Command { std: "docker" "start" "-a" "0af806341ef18600ecbefbc1f4212866042bbdf7358111902b840a0c1a79d34f", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `flush`
[INFO] [stdout] 
[INFO] [stderr]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] running 0 tests
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: `network_lib` (lib) generated 1 warning
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: `network_lib` (lib test) generated 1 warning (1 duplicate)
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.29s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/base_lib-0b8a346d19bf9b04)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chat_base-e070ed8e9eefbd52)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chat_client-6f6b585caa2605d3)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chat_server-564ebe6d1c7649d6)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/macros-31dae0fdc3f93ba2)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/macros_test-15b8deddd277049c)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/network_lib-e27c76b89e996799)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests base_lib
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    Doc-tests chat_base
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests macros
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests network_lib
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::macro_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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] [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] [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] [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] [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" "0af806341ef18600ecbefbc1f4212866042bbdf7358111902b840a0c1a79d34f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af806341ef18600ecbefbc1f4212866042bbdf7358111902b840a0c1a79d34f", kill_on_drop: false }`
[INFO] [stdout] 0af806341ef18600ecbefbc1f4212866042bbdf7358111902b840a0c1a79d34f