[INFO] fetching crate yamt 0.1.0...
[INFO] testing yamt-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate yamt 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate yamt 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yamt 0.1.0
[INFO] finished tweaking crates.io crate yamt 0.1.0
[INFO] tweaked toml for crates.io crate yamt 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate yamt 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] ecc88981064b7baf17fdfbe190bdffaf14c70c82f88399f76e891b1c8c9a9d89
[INFO] running `Command { std: "docker" "start" "-a" "ecc88981064b7baf17fdfbe190bdffaf14c70c82f88399f76e891b1c8c9a9d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecc88981064b7baf17fdfbe190bdffaf14c70c82f88399f76e891b1c8c9a9d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecc88981064b7baf17fdfbe190bdffaf14c70c82f88399f76e891b1c8c9a9d89", kill_on_drop: false }`
[INFO] [stdout] ecc88981064b7baf17fdfbe190bdffaf14c70c82f88399f76e891b1c8c9a9d89
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] c5422ec081c5d97c2b45565569c3f64b6410b73db7fcaeffe67b0ba0b8e74de6
[INFO] running `Command { std: "docker" "start" "-a" "c5422ec081c5d97c2b45565569c3f64b6410b73db7fcaeffe67b0ba0b8e74de6", kill_on_drop: false }`
[INFO] [stderr]    Compiling yamt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "c5422ec081c5d97c2b45565569c3f64b6410b73db7fcaeffe67b0ba0b8e74de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5422ec081c5d97c2b45565569c3f64b6410b73db7fcaeffe67b0ba0b8e74de6", kill_on_drop: false }`
[INFO] [stdout] c5422ec081c5d97c2b45565569c3f64b6410b73db7fcaeffe67b0ba0b8e74de6
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] bbc4086cba1c12c180185d6b9b4b7874ae60f0e09ecae41a94026d07ff3f67aa
[INFO] running `Command { std: "docker" "start" "-a" "bbc4086cba1c12c180185d6b9b4b7874ae60f0e09ecae41a94026d07ff3f67aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling yamt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "bbc4086cba1c12c180185d6b9b4b7874ae60f0e09ecae41a94026d07ff3f67aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbc4086cba1c12c180185d6b9b4b7874ae60f0e09ecae41a94026d07ff3f67aa", kill_on_drop: false }`
[INFO] [stdout] bbc4086cba1c12c180185d6b9b4b7874ae60f0e09ecae41a94026d07ff3f67aa
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 516bcc0fb78f0f1a53030411636dadf8dee51e2ee38624c8e35fb0d7e4fa4ed1
[INFO] running `Command { std: "docker" "start" "-a" "516bcc0fb78f0f1a53030411636dadf8dee51e2ee38624c8e35fb0d7e4fa4ed1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/yamt-71f03f6fba842cb2
[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" "516bcc0fb78f0f1a53030411636dadf8dee51e2ee38624c8e35fb0d7e4fa4ed1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516bcc0fb78f0f1a53030411636dadf8dee51e2ee38624c8e35fb0d7e4fa4ed1", kill_on_drop: false }`
[INFO] [stdout] 516bcc0fb78f0f1a53030411636dadf8dee51e2ee38624c8e35fb0d7e4fa4ed1