[INFO] cloning repository https://github.com/renyanwu/rust-avltree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/renyanwu/rust-avltree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frenyanwu%2Frust-avltree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frenyanwu%2Frust-avltree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac2c854de3da6c70211f7b08ba46a82835b5f48d
[INFO] testing renyanwu/rust-avltree against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frenyanwu%2Frust-avltree" "/workspace/builds/worker-102/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-102/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/renyanwu/rust-avltree on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/renyanwu/rust-avltree
[INFO] finished tweaking git repo https://github.com/renyanwu/rust-avltree
[INFO] tweaked toml for git repo https://github.com/renyanwu/rust-avltree written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] crate git repo https://github.com/renyanwu/rust-avltree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fd02aed8f3348d6288624db3ed742507d917bc6a5d7f7e35ba20b002b9a0dcc
[INFO] running `Command { std: "docker" "start" "-a" "8fd02aed8f3348d6288624db3ed742507d917bc6a5d7f7e35ba20b002b9a0dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fd02aed8f3348d6288624db3ed742507d917bc6a5d7f7e35ba20b002b9a0dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fd02aed8f3348d6288624db3ed742507d917bc6a5d7f7e35ba20b002b9a0dcc", kill_on_drop: false }`
[INFO] [stdout] 8fd02aed8f3348d6288624db3ed742507d917bc6a5d7f7e35ba20b002b9a0dcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48e2d05bbfb91e5761f5f06441f878d501a0de87f7cfcb6c0500e2d31c07457f
[INFO] running `Command { std: "docker" "start" "-a" "48e2d05bbfb91e5761f5f06441f878d501a0de87f7cfcb6c0500e2d31c07457f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-avltree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::stdin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/main.rs:255:11
[INFO] [stdout]     |
[INFO] [stdout] 255 |     while let _ = std::io::stdin().read_line(&mut line).unwrap(){
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "48e2d05bbfb91e5761f5f06441f878d501a0de87f7cfcb6c0500e2d31c07457f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e2d05bbfb91e5761f5f06441f878d501a0de87f7cfcb6c0500e2d31c07457f", kill_on_drop: false }`
[INFO] [stdout] 48e2d05bbfb91e5761f5f06441f878d501a0de87f7cfcb6c0500e2d31c07457f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a2e3036268f3e44b17d253483963912da10b137c1497107996ce682bfbff724
[INFO] running `Command { std: "docker" "start" "-a" "1a2e3036268f3e44b17d253483963912da10b137c1497107996ce682bfbff724", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-avltree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::stdin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/main.rs:255:11
[INFO] [stdout]     |
[INFO] [stdout] 255 |     while let _ = std::io::stdin().read_line(&mut line).unwrap(){
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "1a2e3036268f3e44b17d253483963912da10b137c1497107996ce682bfbff724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a2e3036268f3e44b17d253483963912da10b137c1497107996ce682bfbff724", kill_on_drop: false }`
[INFO] [stdout] 1a2e3036268f3e44b17d253483963912da10b137c1497107996ce682bfbff724
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fd61f21edbd888022315af4133911c23f7270ed96ab0993954e5f573e46f2e67
[INFO] running `Command { std: "docker" "start" "-a" "fd61f21edbd888022315af4133911c23f7270ed96ab0993954e5f573e46f2e67", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::stdin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `while let` pattern
[INFO] [stderr]    --> src/main.rs:255:11
[INFO] [stderr]     |
[INFO] [stderr] 255 |     while let _ = std::io::stdin().read_line(&mut line).unwrap(){
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr]     = note: this pattern will always match, so the loop will never exit
[INFO] [stderr]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-avltree` (bin "rust-avltree" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_avltree-7bb600a0f41761e7)
[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" "fd61f21edbd888022315af4133911c23f7270ed96ab0993954e5f573e46f2e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd61f21edbd888022315af4133911c23f7270ed96ab0993954e5f573e46f2e67", kill_on_drop: false }`
[INFO] [stdout] fd61f21edbd888022315af4133911c23f7270ed96ab0993954e5f573e46f2e67