[INFO] fetching crate t-rec 0.4.0...
[INFO] testing t-rec-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate t-rec 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate t-rec 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate t-rec 0.4.0
[INFO] finished tweaking crates.io crate t-rec 0.4.0
[INFO] tweaked toml for crates.io crate t-rec 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate t-rec 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94b9aa17de6300a24998a27321b45625c0a3e2f85e7ee59c1edb3fbd7410642f
[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" "94b9aa17de6300a24998a27321b45625c0a3e2f85e7ee59c1edb3fbd7410642f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94b9aa17de6300a24998a27321b45625c0a3e2f85e7ee59c1edb3fbd7410642f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94b9aa17de6300a24998a27321b45625c0a3e2f85e7ee59c1edb3fbd7410642f", kill_on_drop: false }`
[INFO] [stdout] 94b9aa17de6300a24998a27321b45625c0a3e2f85e7ee59c1edb3fbd7410642f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91a57d14f116f9e13aa995e8a6e3c954465a0a0a1d96fbd4c060c8ea1e0efff1
[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" "91a57d14f116f9e13aa995e8a6e3c954465a0a0a1d96fbd4c060c8ea1e0efff1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]    Compiling t-rec v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling tiff v0.6.1
[INFO] [stderr]    Compiling x11rb v0.7.0
[INFO] [stderr]    Compiling image v0.23.12
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "91a57d14f116f9e13aa995e8a6e3c954465a0a0a1d96fbd4c060c8ea1e0efff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91a57d14f116f9e13aa995e8a6e3c954465a0a0a1d96fbd4c060c8ea1e0efff1", kill_on_drop: false }`
[INFO] [stdout] 91a57d14f116f9e13aa995e8a6e3c954465a0a0a1d96fbd4c060c8ea1e0efff1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80143c61fd5638ae7f719f5b9f8016696a2068ecfa8314a1d2934b5e83212357
[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" "80143c61fd5638ae7f719f5b9f8016696a2068ecfa8314a1d2934b5e83212357", kill_on_drop: false }`
[INFO] [stderr]    Compiling t-rec v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `Command { std: "docker" "inspect" "80143c61fd5638ae7f719f5b9f8016696a2068ecfa8314a1d2934b5e83212357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80143c61fd5638ae7f719f5b9f8016696a2068ecfa8314a1d2934b5e83212357", kill_on_drop: false }`
[INFO] [stdout] 80143c61fd5638ae7f719f5b9f8016696a2068ecfa8314a1d2934b5e83212357
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3077a99d181d6bd0e7b8cdfad6ec8ff119c6d5af49b400c3ec9301d99357f41e
[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" "3077a99d181d6bd0e7b8cdfad6ec8ff119c6d5af49b400c3ec9301d99357f41e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/t_rec-1d3fa27cf190444a
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test linux::test::margin_new ... ok
[INFO] [stdout] test linux::test::margin_zero ... ok
[INFO] [stdout] test linux::test::margin_new_equal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3077a99d181d6bd0e7b8cdfad6ec8ff119c6d5af49b400c3ec9301d99357f41e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3077a99d181d6bd0e7b8cdfad6ec8ff119c6d5af49b400c3ec9301d99357f41e", kill_on_drop: false }`
[INFO] [stdout] 3077a99d181d6bd0e7b8cdfad6ec8ff119c6d5af49b400c3ec9301d99357f41e