[INFO] cloning repository https://github.com/ChijinZ/rust_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChijinZ/rust_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChijinZ%2Frust_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChijinZ%2Frust_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62aa884b295f1580ccd42e446a9cda52ff9eff0b
[INFO] testing ChijinZ/rust_test against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChijinZ%2Frust_test" "/workspace/builds/worker-89/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-89/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChijinZ/rust_test on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChijinZ/rust_test
[INFO] finished tweaking git repo https://github.com/ChijinZ/rust_test
[INFO] tweaked toml for git repo https://github.com/ChijinZ/rust_test written to /workspace/builds/worker-89/source/Cargo.toml
[INFO] crate git repo https://github.com/ChijinZ/rust_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures v0.1.21
[INFO] [stderr]   Downloaded mio-named-pipes v0.1.6
[INFO] [stderr]   Downloaded enum_primitive v0.1.1
[INFO] [stderr]   Downloaded mio v0.6.15
[INFO] [stderr]   Downloaded rustc-serialize v0.3.24
[INFO] [stderr]   Downloaded mio-uds v0.6.6
[INFO] [stderr]   Downloaded tokio-udp v0.1.1
[INFO] [stderr]   Downloaded crossbeam-deque v0.3.1
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.4
[INFO] [stderr]   Downloaded tokio-fs v0.1.1
[INFO] [stderr]   Downloaded tokio-timer v0.2.4
[INFO] [stderr]   Downloaded syn v0.14.4
[INFO] [stderr]   Downloaded quote v0.6.3
[INFO] [stderr]   Downloaded bincode v1.0.1
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded memmap v0.6.2
[INFO] [stderr]   Downloaded theban_interval_tree v0.7.1
[INFO] [stderr]   Downloaded tokio-tcp v0.1.0
[INFO] [stderr]   Downloaded miow v0.3.1
[INFO] [stderr]   Downloaded slab v0.4.0
[INFO] [stderr]   Downloaded byteorder v1.2.3
[INFO] [stderr]   Downloaded tokio-io v0.1.7
[INFO] [stderr]   Downloaded msg-transmitter v0.3.0
[INFO] [stderr]   Downloaded tokio-codec v0.1.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.6
[INFO] [stderr]   Downloaded nix v0.10.0
[INFO] [stderr]   Downloaded serde_derive v1.0.69
[INFO] [stderr]   Downloaded tokio-uds v0.2.0
[INFO] [stderr]   Downloaded serde_json v1.0.22
[INFO] [stderr]   Downloaded memrange v0.1.3
[INFO] [stderr]   Downloaded tokio v0.1.7
[INFO] [stderr]   Downloaded socket2 v0.3.7
[INFO] [stderr]   Downloaded bytes v0.4.8
[INFO] [stderr]   Downloaded tokio-executor v0.1.2
[INFO] [stderr]   Downloaded tokio-signal v0.2.1
[INFO] [stderr]   Downloaded serde v1.0.69
[INFO] [stderr]   Downloaded tokio-process v0.2.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.4.3
[INFO] [stderr]   Downloaded crossbeam-utils v0.3.2
[INFO] [stderr]   Downloaded tokio-reactor v0.1.2
[INFO] [stderr]   Downloaded shared_memory v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51fbacc1e30f11df9156e1c8bff6bd2017e94d47c2918249581bc199edbb4653
[INFO] running `Command { std: "docker" "start" "-a" "51fbacc1e30f11df9156e1c8bff6bd2017e94d47c2918249581bc199edbb4653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51fbacc1e30f11df9156e1c8bff6bd2017e94d47c2918249581bc199edbb4653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fbacc1e30f11df9156e1c8bff6bd2017e94d47c2918249581bc199edbb4653", kill_on_drop: false }`
[INFO] [stdout] 51fbacc1e30f11df9156e1c8bff6bd2017e94d47c2918249581bc199edbb4653
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1cd566831b19aee81e05e8b159f66b15e94a5a1d4de58cbf533eb3540916ec4
[INFO] running `Command { std: "docker" "start" "-a" "c1cd566831b19aee81e05e8b159f66b15e94a5a1d4de58cbf533eb3540916ec4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling serde v1.0.69
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling mio-named-pipes v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling tokio-executor v0.1.2
[INFO] [stderr]    Compiling memrange v0.1.3
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling bytes v0.4.8
[INFO] [stderr]    Compiling tokio-timer v0.2.4
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.4
[INFO] [stderr]    Compiling theban_interval_tree v0.7.1
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.2
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-fs v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling tokio-signal v0.2.1
[INFO] [stderr]    Compiling tokio-uds v0.2.0
[INFO] [stderr]    Compiling tokio-process v0.2.2
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.22
[INFO] [stderr]    Compiling serde_derive v1.0.69
[INFO] [stderr]    Compiling shared_memory v0.8.0
[INFO] [stderr]    Compiling msg-transmitter v0.3.0
[INFO] [stderr]    Compiling rust_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `Command { std: "docker" "inspect" "c1cd566831b19aee81e05e8b159f66b15e94a5a1d4de58cbf533eb3540916ec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1cd566831b19aee81e05e8b159f66b15e94a5a1d4de58cbf533eb3540916ec4", kill_on_drop: false }`
[INFO] [stdout] c1cd566831b19aee81e05e8b159f66b15e94a5a1d4de58cbf533eb3540916ec4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c08d8c34b82197e4cfc6b6b46a4c1fc8b6ac6e2c75f0dd213d9b00f844d8f450
[INFO] running `Command { std: "docker" "start" "-a" "c08d8c34b82197e4cfc6b6b46a4c1fc8b6ac6e2c75f0dd213d9b00f844d8f450", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3m 14s
[INFO] running `Command { std: "docker" "inspect" "c08d8c34b82197e4cfc6b6b46a4c1fc8b6ac6e2c75f0dd213d9b00f844d8f450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c08d8c34b82197e4cfc6b6b46a4c1fc8b6ac6e2c75f0dd213d9b00f844d8f450", kill_on_drop: false }`
[INFO] [stdout] c08d8c34b82197e4cfc6b6b46a4c1fc8b6ac6e2c75f0dd213d9b00f844d8f450
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 867a4743a3d2c0d98df043346a9f920f03e6470582385351959af26b38425d60
[INFO] running `Command { std: "docker" "start" "-a" "867a4743a3d2c0d98df043346a9f920f03e6470582385351959af26b38425d60", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_test` (bin "rust_test" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_test-0ececef173334421)
[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" "867a4743a3d2c0d98df043346a9f920f03e6470582385351959af26b38425d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "867a4743a3d2c0d98df043346a9f920f03e6470582385351959af26b38425d60", kill_on_drop: false }`
[INFO] [stdout] 867a4743a3d2c0d98df043346a9f920f03e6470582385351959af26b38425d60