[INFO] fetching crate trackable 1.0.0...
[INFO] testing trackable-1.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate trackable 1.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate trackable 1.0.0 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 trackable 1.0.0
[INFO] finished tweaking crates.io crate trackable 1.0.0
[INFO] tweaked toml for crates.io crate trackable 1.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate trackable 1.0.0 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 100a823d4b47cf189de6fead7569c88f7febb92b62555fa81618f0e7a449effc
[INFO] running `Command { std: "docker" "start" "-a" "100a823d4b47cf189de6fead7569c88f7febb92b62555fa81618f0e7a449effc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "100a823d4b47cf189de6fead7569c88f7febb92b62555fa81618f0e7a449effc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "100a823d4b47cf189de6fead7569c88f7febb92b62555fa81618f0e7a449effc", kill_on_drop: false }`
[INFO] [stdout] 100a823d4b47cf189de6fead7569c88f7febb92b62555fa81618f0e7a449effc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] 31b3ac4441ce42f500dfb444fed39b896ed6fd155ad99ffb9f5ec9c9be047409
[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" "31b3ac4441ce42f500dfb444fed39b896ed6fd155ad99ffb9f5ec9c9be047409", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]    Compiling trackable v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.85s
[INFO] running `Command { std: "docker" "inspect" "31b3ac4441ce42f500dfb444fed39b896ed6fd155ad99ffb9f5ec9c9be047409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31b3ac4441ce42f500dfb444fed39b896ed6fd155ad99ffb9f5ec9c9be047409", kill_on_drop: false }`
[INFO] [stdout] 31b3ac4441ce42f500dfb444fed39b896ed6fd155ad99ffb9f5ec9c9be047409
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e0649ab22afa10497d92b42379a5b215e81df0c0de60769b1f1622114d1035a
[INFO] running `Command { std: "docker" "start" "-a" "1e0649ab22afa10497d92b42379a5b215e81df0c0de60769b1f1622114d1035a", kill_on_drop: false }`
[INFO] [stderr]    Compiling trackable v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `NonCritical`
[INFO] [stdout]    --> src/error.rs:505:13
[INFO] [stdout]     |
[INFO] [stdout] 505 |             NonCritical,
[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 2.53s
[INFO] running `Command { std: "docker" "inspect" "1e0649ab22afa10497d92b42379a5b215e81df0c0de60769b1f1622114d1035a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e0649ab22afa10497d92b42379a5b215e81df0c0de60769b1f1622114d1035a", kill_on_drop: false }`
[INFO] [stdout] 1e0649ab22afa10497d92b42379a5b215e81df0c0de60769b1f1622114d1035a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] eac8fefa155d5ab9e080290b81ee9d964254ac72d02bc4b3defa6258a0691e49
[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" "eac8fefa155d5ab9e080290b81ee9d964254ac72d02bc4b3defa6258a0691e49", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `NonCritical`
[INFO] [stderr]    --> src/error.rs:505:13
[INFO] [stderr]     |
[INFO] [stderr] 505 |             NonCritical,
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trackable-a9900ca77670c6a2
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test error::test::it_works ... ok
[INFO] [stdout] test macros::test::track_assert_works ... ok
[INFO] [stdout] test macros::test::track_works ... ok
[INFO] [stdout] test test::it_works ... ok
[INFO] [stdout] test macros::test::track_try_unwrap_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trackable
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test src/error.rs - error::TrackableError (line 331) ... ok
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] test src/macros.rs - track_try_unwrap (line 406) ... ok
[INFO] [stdout] test src/error.rs - error::ErrorKindExt::error (line 195) ... ok
[INFO] [stdout] test src/macros.rs - track_panic (line 329) ... ok
[INFO] [stdout] test src/error.rs - error::ErrorKindExt::cause (line 211) ... ok
[INFO] [stdout] test src/lib.rs - Location::new (line 258) ... ok
[INFO] [stdout] test src/lib.rs - History (line 183) ... ok
[INFO] [stdout] test src/macros.rs - derive_traits_for_trackable_error_newtype (line 450) ... ok
[INFO] [stdout] test src/macros.rs - track_assert (line 132) ... ok
[INFO] [stdout] test src/macros.rs - track (line 9) ... ok
[INFO] [stdout] test src/error.rs - error (line 5) ... ok
[INFO] [stdout] test src/macros.rs - track_assert_some (line 267) ... ok
[INFO] [stdout] test src/lib.rs - Trackable (line 83) ... ok
[INFO] [stdout] test src/error.rs - error::ErrorKindExt::takes_over (line 232) ... ok
[INFO] [stdout] test src/error.rs - error::TrackableError (line 282) ... ok
[INFO] [stdout] test src/macros.rs - track_panic (line 349) ... ok
[INFO] [stdout] test src/macros.rs - track_any_err (line 80) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eac8fefa155d5ab9e080290b81ee9d964254ac72d02bc4b3defa6258a0691e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eac8fefa155d5ab9e080290b81ee9d964254ac72d02bc4b3defa6258a0691e49", kill_on_drop: false }`
[INFO] [stdout] eac8fefa155d5ab9e080290b81ee9d964254ac72d02bc4b3defa6258a0691e49