[INFO] fetching crate rust_study0 0.1.1...
[INFO] testing rust_study0-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rust_study0 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rust_study0 0.1.1 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 crates.io crate rust_study0 0.1.1
[INFO] finished tweaking crates.io crate rust_study0 0.1.1
[INFO] tweaked toml for crates.io crate rust_study0 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate rust_study0 0.1.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 028f9629eb86b745eaf07b95ada7d804d4c9f521ea9f2e067efc8a8d6751beff
[INFO] running `Command { std: "docker" "start" "-a" "028f9629eb86b745eaf07b95ada7d804d4c9f521ea9f2e067efc8a8d6751beff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "028f9629eb86b745eaf07b95ada7d804d4c9f521ea9f2e067efc8a8d6751beff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "028f9629eb86b745eaf07b95ada7d804d4c9f521ea9f2e067efc8a8d6751beff", kill_on_drop: false }`
[INFO] [stdout] 028f9629eb86b745eaf07b95ada7d804d4c9f521ea9f2e067efc8a8d6751beff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 5ba13c2974ee82cfe034b89d71d5fe3bd8ac5b4d3a63ac756d907ced61b6ae8d
[INFO] running `Command { std: "docker" "start" "-a" "5ba13c2974ee82cfe034b89d71d5fe3bd8ac5b4d3a63ac756d907ced61b6ae8d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rust_study0 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `addr`
[INFO] [stdout]    --> src/lib.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         addr: String,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:350:14
[INFO] [stdout]     |
[INFO] [stdout] 350 |     #[derive(Debug)]
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.48s
[INFO] running `Command { std: "docker" "inspect" "5ba13c2974ee82cfe034b89d71d5fe3bd8ac5b4d3a63ac756d907ced61b6ae8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ba13c2974ee82cfe034b89d71d5fe3bd8ac5b4d3a63ac756d907ced61b6ae8d", kill_on_drop: false }`
[INFO] [stdout] 5ba13c2974ee82cfe034b89d71d5fe3bd8ac5b4d3a63ac756d907ced61b6ae8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] bee98651afd701574e93740d0f4aeb376a0485a01170cc933d0e5b48b706b630
[INFO] running `Command { std: "docker" "start" "-a" "bee98651afd701574e93740d0f4aeb376a0485a01170cc933d0e5b48b706b630", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `addr`
[INFO] [stdout]    --> src/lib.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         addr: String,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:350:14
[INFO] [stdout]     |
[INFO] [stdout] 350 |     #[derive(Debug)]
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust_study0 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `addr`
[INFO] [stdout]    --> src/lib.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         addr: String,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:350:14
[INFO] [stdout]     |
[INFO] [stdout] 350 |     #[derive(Debug)]
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_study0-44eefadf8c40fdfe)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_study0-d2786353671138bf)
[INFO] running `Command { std: "docker" "inspect" "bee98651afd701574e93740d0f4aeb376a0485a01170cc933d0e5b48b706b630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bee98651afd701574e93740d0f4aeb376a0485a01170cc933d0e5b48b706b630", kill_on_drop: false }`
[INFO] [stdout] bee98651afd701574e93740d0f4aeb376a0485a01170cc933d0e5b48b706b630
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 098cb04b90f0c719d7e666c0197bb9a2a389fc35a166d5e78c9ae0fb33282772
[INFO] running `Command { std: "docker" "start" "-a" "098cb04b90f0c719d7e666c0197bb9a2a389fc35a166d5e78c9ae0fb33282772", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `addr`
[INFO] [stderr]    --> src/lib.rs:352:9
[INFO] [stderr]     |
[INFO] [stderr] 352 |         addr: String,
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Device` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/lib.rs:350:14
[INFO] [stderr]     |
[INFO] [stderr] 350 |     #[derive(Debug)]
[INFO] [stderr]     |              ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_study0` (lib) generated 1 warning
[INFO] [stderr] warning: `rust_study0` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_study0-44eefadf8c40fdfe)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::multi_results ... ok
[INFO] [stdout] test tests::multi_results_with_iterator ... ok
[INFO] [stdout] test tests::one_result ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_study0-d2786353671138bf)
[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] [stderr]    Doc-tests rust_study0
[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" "098cb04b90f0c719d7e666c0197bb9a2a389fc35a166d5e78c9ae0fb33282772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "098cb04b90f0c719d7e666c0197bb9a2a389fc35a166d5e78c9ae0fb33282772", kill_on_drop: false }`
[INFO] [stdout] 098cb04b90f0c719d7e666c0197bb9a2a389fc35a166d5e78c9ae0fb33282772