[INFO] fetching crate backpack 0.1.0...
[INFO] testing backpack-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate backpack 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate backpack 0.1.0 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 backpack 0.1.0
[INFO] finished tweaking crates.io crate backpack 0.1.0
[INFO] tweaked toml for crates.io crate backpack 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 38774c1bd510f9cd76732b4d9db362ceeb000429365e39aeab8ca1bd56de9fa0
[INFO] running `Command { std: "docker" "start" "-a" "38774c1bd510f9cd76732b4d9db362ceeb000429365e39aeab8ca1bd56de9fa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38774c1bd510f9cd76732b4d9db362ceeb000429365e39aeab8ca1bd56de9fa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38774c1bd510f9cd76732b4d9db362ceeb000429365e39aeab8ca1bd56de9fa0", kill_on_drop: false }`
[INFO] [stdout] 38774c1bd510f9cd76732b4d9db362ceeb000429365e39aeab8ca1bd56de9fa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 85b7bedc3360225b9a7f865c14d6ebf5d9b02256d47d86d86c9bfb92ebe71526
[INFO] running `Command { std: "docker" "start" "-a" "85b7bedc3360225b9a7f865c14d6ebf5d9b02256d47d86d86c9bfb92ebe71526", kill_on_drop: false }`
[INFO] [stderr]    Compiling backpack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `File`
[INFO] [stdout]  --> src/file.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum File {
[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 dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "85b7bedc3360225b9a7f865c14d6ebf5d9b02256d47d86d86c9bfb92ebe71526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b7bedc3360225b9a7f865c14d6ebf5d9b02256d47d86d86c9bfb92ebe71526", kill_on_drop: false }`
[INFO] [stdout] 85b7bedc3360225b9a7f865c14d6ebf5d9b02256d47d86d86c9bfb92ebe71526
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6ee8bba252abbc27690894da9433f19338bc8029970aa1a2c4c6d7d28e588384
[INFO] running `Command { std: "docker" "start" "-a" "6ee8bba252abbc27690894da9433f19338bc8029970aa1a2c4c6d7d28e588384", kill_on_drop: false }`
[INFO] [stderr]    Compiling backpack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `File`
[INFO] [stdout]  --> src/file.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum File {
[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] [stdout] warning: enum is never used: `File`
[INFO] [stdout]  --> src/file.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum File {
[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 1.01s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/backpack-0704036b5e92aafe)
[INFO] running `Command { std: "docker" "inspect" "6ee8bba252abbc27690894da9433f19338bc8029970aa1a2c4c6d7d28e588384", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ee8bba252abbc27690894da9433f19338bc8029970aa1a2c4c6d7d28e588384", kill_on_drop: false }`
[INFO] [stdout] 6ee8bba252abbc27690894da9433f19338bc8029970aa1a2c4c6d7d28e588384
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6f046c6ac9cca1be617b46e89dfc14157c04c63b560bfdec9f0db85dead824e
[INFO] running `Command { std: "docker" "start" "-a" "b6f046c6ac9cca1be617b46e89dfc14157c04c63b560bfdec9f0db85dead824e", kill_on_drop: false }`
[INFO] [stderr] warning: enum is never used: `File`
[INFO] [stderr]  --> src/file.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub enum File {
[INFO] [stderr]   |          ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `backpack` (lib) generated 1 warning
[INFO] [stderr] warning: `backpack` (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/backpack-0704036b5e92aafe)
[INFO] [stderr]    Doc-tests backpack
[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" "b6f046c6ac9cca1be617b46e89dfc14157c04c63b560bfdec9f0db85dead824e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6f046c6ac9cca1be617b46e89dfc14157c04c63b560bfdec9f0db85dead824e", kill_on_drop: false }`
[INFO] [stdout] b6f046c6ac9cca1be617b46e89dfc14157c04c63b560bfdec9f0db85dead824e