[INFO] cloning repository https://github.com/jayy-lmao/rust-dataloader-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jayy-lmao/rust-dataloader-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayy-lmao%2Frust-dataloader-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayy-lmao%2Frust-dataloader-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 943b32647fa9e45fed969cc1313f8375696dcde1
[INFO] testing jayy-lmao/rust-dataloader-experiment against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayy-lmao%2Frust-dataloader-experiment" "/workspace/builds/worker-119/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-119/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jayy-lmao/rust-dataloader-experiment on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jayy-lmao/rust-dataloader-experiment
[INFO] finished tweaking git repo https://github.com/jayy-lmao/rust-dataloader-experiment
[INFO] tweaked toml for git repo https://github.com/jayy-lmao/rust-dataloader-experiment written to /workspace/builds/worker-119/source/Cargo.toml
[INFO] crate git repo https://github.com/jayy-lmao/rust-dataloader-experiment already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d40ae9535be562ed4bb98a594d3b0a5e133d58b8c67e95ec2a535d97e2e4766e
[INFO] running `Command { std: "docker" "start" "-a" "d40ae9535be562ed4bb98a594d3b0a5e133d58b8c67e95ec2a535d97e2e4766e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d40ae9535be562ed4bb98a594d3b0a5e133d58b8c67e95ec2a535d97e2e4766e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d40ae9535be562ed4bb98a594d3b0a5e133d58b8c67e95ec2a535d97e2e4766e", kill_on_drop: false }`
[INFO] [stdout] d40ae9535be562ed4bb98a594d3b0a5e133d58b8c67e95ec2a535d97e2e4766e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29f73e3842b5dff8e666642afa7e8f27bcb3faec35c83c74b1337b014bb3d3cf
[INFO] running `Command { std: "docker" "start" "-a" "29f73e3842b5dff8e666642afa7e8f27bcb3faec35c83c74b1337b014bb3d3cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling futures-core v0.3.1
[INFO] [stderr]    Compiling futures-sink v0.3.1
[INFO] [stderr]    Compiling futures-io v0.3.1
[INFO] [stderr]    Compiling futures-task v0.3.1
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling futures-timer v2.0.2
[INFO] [stderr]    Compiling futures-channel v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]    Compiling futures-util v0.3.1
[INFO] [stderr]    Compiling futures-executor v0.3.1
[INFO] [stderr]    Compiling futures v0.3.1
[INFO] [stderr]    Compiling dataloader v0.6.0
[INFO] [stderr]    Compiling dataloader-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TryFutureExt as _`
[INFO] [stdout]  --> src/main.rs:2:49
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::{executor, future, FutureExt as _, TryFutureExt as _};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/main.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             tx1.send(res_resolved.unwrap());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.83s
[INFO] running `Command { std: "docker" "inspect" "29f73e3842b5dff8e666642afa7e8f27bcb3faec35c83c74b1337b014bb3d3cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29f73e3842b5dff8e666642afa7e8f27bcb3faec35c83c74b1337b014bb3d3cf", kill_on_drop: false }`
[INFO] [stdout] 29f73e3842b5dff8e666642afa7e8f27bcb3faec35c83c74b1337b014bb3d3cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a74314544b98f85dd132cc0a6f21056836856d0487c219749db4da056700a6f
[INFO] running `Command { std: "docker" "start" "-a" "5a74314544b98f85dd132cc0a6f21056836856d0487c219749db4da056700a6f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling dataloader-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TryFutureExt as _`
[INFO] [stdout]  --> src/main.rs:2:49
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::{executor, future, FutureExt as _, TryFutureExt as _};
[INFO] [stdout]   |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/main.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             tx1.send(res_resolved.unwrap());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/dataloader_test-0bda3128cc1c5140)
[INFO] running `Command { std: "docker" "inspect" "5a74314544b98f85dd132cc0a6f21056836856d0487c219749db4da056700a6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a74314544b98f85dd132cc0a6f21056836856d0487c219749db4da056700a6f", kill_on_drop: false }`
[INFO] [stdout] 5a74314544b98f85dd132cc0a6f21056836856d0487c219749db4da056700a6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 037c8c6f64691c18b09af4aeba11a13a8dfbc142505b5af0d1e00ea679b2be76
[INFO] running `Command { std: "docker" "start" "-a" "037c8c6f64691c18b09af4aeba11a13a8dfbc142505b5af0d1e00ea679b2be76", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `TryFutureExt as _`
[INFO] [stderr]  --> src/main.rs:2:49
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::{executor, future, FutureExt as _, TryFutureExt as _};
[INFO] [stderr]   |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]  --> src/main.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |             tx1.send(res_resolved.unwrap());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `dataloader-test` (bin "dataloader-test" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/dataloader_test-0bda3128cc1c5140)
[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" "037c8c6f64691c18b09af4aeba11a13a8dfbc142505b5af0d1e00ea679b2be76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "037c8c6f64691c18b09af4aeba11a13a8dfbc142505b5af0d1e00ea679b2be76", kill_on_drop: false }`
[INFO] [stdout] 037c8c6f64691c18b09af4aeba11a13a8dfbc142505b5af0d1e00ea679b2be76