[INFO] fetching crate kumquat 1.0.0...
[INFO] testing kumquat-1.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate kumquat 1.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate kumquat 1.0.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kumquat 1.0.0
[INFO] finished tweaking crates.io crate kumquat 1.0.0
[INFO] tweaked toml for crates.io crate kumquat 1.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate kumquat 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "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] c9906dcfa80524a88af47b57ed3b7b4d723d4dc496f11c6f5cdfbe36dae36428
[INFO] running `Command { std: "docker" "start" "-a" "c9906dcfa80524a88af47b57ed3b7b4d723d4dc496f11c6f5cdfbe36dae36428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9906dcfa80524a88af47b57ed3b7b4d723d4dc496f11c6f5cdfbe36dae36428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9906dcfa80524a88af47b57ed3b7b4d723d4dc496f11c6f5cdfbe36dae36428", kill_on_drop: false }`
[INFO] [stdout] c9906dcfa80524a88af47b57ed3b7b4d723d4dc496f11c6f5cdfbe36dae36428
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "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] 7edf6951149a91e69570194806243417485a0df8fa5052deb6789ca1596eed68
[INFO] running `Command { std: "docker" "start" "-a" "7edf6951149a91e69570194806243417485a0df8fa5052deb6789ca1596eed68", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling onig_sys v69.7.0
[INFO] [stderr]    Compiling line-wrap v0.1.1
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling plist v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling onig v6.2.0
[INFO] [stderr]    Compiling syntect v4.6.0
[INFO] [stderr]    Compiling kumquat v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     height: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `saved`
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     saved: bool,
[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 20.79s
[INFO] running `Command { std: "docker" "inspect" "7edf6951149a91e69570194806243417485a0df8fa5052deb6789ca1596eed68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7edf6951149a91e69570194806243417485a0df8fa5052deb6789ca1596eed68", kill_on_drop: false }`
[INFO] [stdout] 7edf6951149a91e69570194806243417485a0df8fa5052deb6789ca1596eed68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96af5e65a97976ceed4ec8b3d131f05cd50319a7aba1bbaeb2c306ecdcfbcec8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "96af5e65a97976ceed4ec8b3d131f05cd50319a7aba1bbaeb2c306ecdcfbcec8", kill_on_drop: false }`
[INFO] [stderr]    Compiling kumquat v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     height: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `saved`
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     saved: bool,
[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 1.03s
[INFO] running `Command { std: "docker" "inspect" "96af5e65a97976ceed4ec8b3d131f05cd50319a7aba1bbaeb2c306ecdcfbcec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96af5e65a97976ceed4ec8b3d131f05cd50319a7aba1bbaeb2c306ecdcfbcec8", kill_on_drop: false }`
[INFO] [stdout] 96af5e65a97976ceed4ec8b3d131f05cd50319a7aba1bbaeb2c306ecdcfbcec8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "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] 587b59d740bed0cf8972331b8005b14775d035b1239072b199a60847a860ef33
[INFO] running `Command { std: "docker" "start" "-a" "587b59d740bed0cf8972331b8005b14775d035b1239072b199a60847a860ef33", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> src/main.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     height: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `saved`
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     saved: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `kumquat` (bin "kumquat" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kumquat-d44cfba1ae732c69)
[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" "587b59d740bed0cf8972331b8005b14775d035b1239072b199a60847a860ef33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "587b59d740bed0cf8972331b8005b14775d035b1239072b199a60847a860ef33", kill_on_drop: false }`
[INFO] [stdout] 587b59d740bed0cf8972331b8005b14775d035b1239072b199a60847a860ef33