[INFO] fetching crate functiontrace-server 0.4.0...
[INFO] testing functiontrace-server-0.4.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate functiontrace-server 0.4.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate functiontrace-server 0.4.0 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 functiontrace-server 0.4.0
[INFO] finished tweaking crates.io crate functiontrace-server 0.4.0
[INFO] tweaked toml for crates.io crate functiontrace-server 0.4.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate functiontrace-server 0.4.0 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 argh_derive v0.1.4
[INFO] [stderr]   Downloaded argh v0.1.4
[INFO] [stderr]   Downloaded argh_shared v0.1.4
[INFO] [stderr]   Downloaded rmp-serde v0.15.0
[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] [stdout] 5a8d4275a41573a4a50b337c95e3acbabdbbde3a12c8b84ec367727b926b56c8
[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" "5a8d4275a41573a4a50b337c95e3acbabdbbde3a12c8b84ec367727b926b56c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a8d4275a41573a4a50b337c95e3acbabdbbde3a12c8b84ec367727b926b56c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a8d4275a41573a4a50b337c95e3acbabdbbde3a12c8b84ec367727b926b56c8", kill_on_drop: false }`
[INFO] [stdout] 5a8d4275a41573a4a50b337c95e3acbabdbbde3a12c8b84ec367727b926b56c8
[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] [stdout] 641b9b67d3895c9073a47765e202f1c14a667b19905d2916b10c4602335f98db
[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" "641b9b67d3895c9073a47765e202f1c14a667b19905d2916b10c4602335f98db", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling argh_shared v0.1.4
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling bytesize v1.0.1
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling env_logger v0.8.2
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling crossbeam-queue v0.3.1
[INFO] [stderr]    Compiling rmp v0.8.9
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling argh_derive v0.1.4
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]    Compiling argh v0.1.4
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling rmp-serde v0.15.0
[INFO] [stderr]    Compiling functiontrace-server v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `GarbageCollection`
[INFO] [stdout]   --> src/profile_generator.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     GarbageCollection,
[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 dev [unoptimized + debuginfo] target(s) in 35.25s
[INFO] running `Command { std: "docker" "inspect" "641b9b67d3895c9073a47765e202f1c14a667b19905d2916b10c4602335f98db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "641b9b67d3895c9073a47765e202f1c14a667b19905d2916b10c4602335f98db", kill_on_drop: false }`
[INFO] [stdout] 641b9b67d3895c9073a47765e202f1c14a667b19905d2916b10c4602335f98db
[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] [stdout] 081f745e6e793b39a8a683a6a07d324e91bc1bb52e0b779ae8d94e1e2ff71895
[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" "081f745e6e793b39a8a683a6a07d324e91bc1bb52e0b779ae8d94e1e2ff71895", kill_on_drop: false }`
[INFO] [stderr]    Compiling functiontrace-server v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `GarbageCollection`
[INFO] [stdout]   --> src/profile_generator.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     GarbageCollection,
[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] [stdout] warning: variant is never constructed: `GarbageCollection`
[INFO] [stdout]   --> src/profile_generator.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     GarbageCollection,
[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 1.69s
[INFO] running `Command { std: "docker" "inspect" "081f745e6e793b39a8a683a6a07d324e91bc1bb52e0b779ae8d94e1e2ff71895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "081f745e6e793b39a8a683a6a07d324e91bc1bb52e0b779ae8d94e1e2ff71895", kill_on_drop: false }`
[INFO] [stdout] 081f745e6e793b39a8a683a6a07d324e91bc1bb52e0b779ae8d94e1e2ff71895
[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] [stdout] daea02c97db54bd118d6727d98f8aedb019820b95ca469edc67025bcaad0d278
[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" "daea02c97db54bd118d6727d98f8aedb019820b95ca469edc67025bcaad0d278", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `GarbageCollection`
[INFO] [stderr]   --> src/profile_generator.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     GarbageCollection,
[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] warning: variant is never constructed: `GarbageCollection`
[INFO] [stderr]   --> src/profile_generator.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     GarbageCollection,
[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/functiontrace_server-c1a061ab51c31fa2
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/functiontrace_server-de95d37220feb61f
[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] [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] [stderr]    Doc-tests functiontrace-server
[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" "daea02c97db54bd118d6727d98f8aedb019820b95ca469edc67025bcaad0d278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daea02c97db54bd118d6727d98f8aedb019820b95ca469edc67025bcaad0d278", kill_on_drop: false }`
[INFO] [stdout] daea02c97db54bd118d6727d98f8aedb019820b95ca469edc67025bcaad0d278