[INFO] fetching crate credent 0.1.0...
[INFO] testing credent-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate credent 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate credent 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 credent 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate credent 0.1.0
[INFO] tweaked toml for crates.io crate credent 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate credent 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded credent_fs v0.1.0
[INFO] [stderr]   Downloaded credent_cli v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+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] f4c98b38e9f73ca5165e0e964014844b477e55de591edb0ccf32c3f949e8b07e
[INFO] running `Command { std: "docker" "start" "-a" "f4c98b38e9f73ca5165e0e964014844b477e55de591edb0ccf32c3f949e8b07e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4c98b38e9f73ca5165e0e964014844b477e55de591edb0ccf32c3f949e8b07e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4c98b38e9f73ca5165e0e964014844b477e55de591edb0ccf32c3f949e8b07e", kill_on_drop: false }`
[INFO] [stdout] f4c98b38e9f73ca5165e0e964014844b477e55de591edb0ccf32c3f949e8b07e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+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] fc008bcc7262ecfb31064d322fbebaf04e23f710d3318abfaba0f8ce6753b8da
[INFO] running `Command { std: "docker" "start" "-a" "fc008bcc7262ecfb31064d322fbebaf04e23f710d3318abfaba0f8ce6753b8da", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling futures-core v0.3.7
[INFO] [stderr]    Compiling futures-io v0.3.7
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling async-lock v2.3.0
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling mio v0.7.5
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling rpassword v5.0.0
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling dirs v3.0.1
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling futures-lite v1.11.2
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-io v1.1.10
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling async-fs v1.5.0
[INFO] [stderr]    Compiling async-net v1.5.0
[INFO] [stderr]    Compiling async-process v1.0.1
[INFO] [stderr]    Compiling smol v1.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling credent_model v0.1.0
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling credent_cli v0.1.0
[INFO] [stderr]    Compiling credent_fs v0.1.0
[INFO] [stderr]    Compiling credent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.50s
[INFO] running `Command { std: "docker" "inspect" "fc008bcc7262ecfb31064d322fbebaf04e23f710d3318abfaba0f8ce6753b8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc008bcc7262ecfb31064d322fbebaf04e23f710d3318abfaba0f8ce6753b8da", kill_on_drop: false }`
[INFO] [stdout] fc008bcc7262ecfb31064d322fbebaf04e23f710d3318abfaba0f8ce6753b8da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24c7c7d4078f0328817d0253df1a709de752be98795de60d7c5f0cd223b8f052
[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" "24c7c7d4078f0328817d0253df1a709de752be98795de60d7c5f0cd223b8f052", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling instant v0.1.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling parking_lot v0.11.0
[INFO] [stderr]    Compiling crossterm v0.18.2
[INFO] [stderr]    Compiling credent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 14.37s
[INFO] running `Command { std: "docker" "inspect" "24c7c7d4078f0328817d0253df1a709de752be98795de60d7c5f0cd223b8f052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c7c7d4078f0328817d0253df1a709de752be98795de60d7c5f0cd223b8f052", kill_on_drop: false }`
[INFO] [stdout] 24c7c7d4078f0328817d0253df1a709de752be98795de60d7c5f0cd223b8f052
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 328cb19f19d17e8d4968aa96e39b9f02398b00d44e7013efefbc5b5b82a20cc6
[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" "328cb19f19d17e8d4968aa96e39b9f02398b00d44e7013efefbc5b5b82a20cc6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "328cb19f19d17e8d4968aa96e39b9f02398b00d44e7013efefbc5b5b82a20cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "328cb19f19d17e8d4968aa96e39b9f02398b00d44e7013efefbc5b5b82a20cc6", kill_on_drop: false }`
[INFO] [stdout] 328cb19f19d17e8d4968aa96e39b9f02398b00d44e7013efefbc5b5b82a20cc6