[INFO] fetching crate variant 0.1.0...
[INFO] testing variant-0.1.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate variant 0.1.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate variant 0.1.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate variant 0.1.0
[INFO] finished tweaking crates.io crate variant 0.1.0
[INFO] tweaked toml for crates.io crate variant 0.1.0 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 340ae91185254495ebe1e8eb145fd682a36c995fa1c60384ceb672742ba6098e
[INFO] running `Command { std: "docker" "start" "-a" "340ae91185254495ebe1e8eb145fd682a36c995fa1c60384ceb672742ba6098e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "340ae91185254495ebe1e8eb145fd682a36c995fa1c60384ceb672742ba6098e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "340ae91185254495ebe1e8eb145fd682a36c995fa1c60384ceb672742ba6098e", kill_on_drop: false }`
[INFO] [stdout] 340ae91185254495ebe1e8eb145fd682a36c995fa1c60384ceb672742ba6098e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddddaaf47a2c8c79d3ffd170db544f00e6721ba2d4da11d6af4a078fb310b6f3
[INFO] running `Command { std: "docker" "start" "-a" "ddddaaf47a2c8c79d3ffd170db544f00e6721ba2d4da11d6af4a078fb310b6f3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling mersenne_twister v1.1.1
[INFO] [stderr]    Compiling variant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "ddddaaf47a2c8c79d3ffd170db544f00e6721ba2d4da11d6af4a078fb310b6f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddddaaf47a2c8c79d3ffd170db544f00e6721ba2d4da11d6af4a078fb310b6f3", kill_on_drop: false }`
[INFO] [stdout] ddddaaf47a2c8c79d3ffd170db544f00e6721ba2d4da11d6af4a078fb310b6f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61cd2c290d2d6a3ff7909133a4737c5a465688784017c3a17a87792718af9685
[INFO] running `Command { std: "docker" "start" "-a" "61cd2c290d2d6a3ff7909133a4737c5a465688784017c3a17a87792718af9685", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling variant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.03s
[INFO] running `Command { std: "docker" "inspect" "61cd2c290d2d6a3ff7909133a4737c5a465688784017c3a17a87792718af9685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61cd2c290d2d6a3ff7909133a4737c5a465688784017c3a17a87792718af9685", kill_on_drop: false }`
[INFO] [stdout] 61cd2c290d2d6a3ff7909133a4737c5a465688784017c3a17a87792718af9685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 08f5dfe69cecbb32ae1e38247d3a076bb39fb510ec0f1a143a97be1d7653b14c
[INFO] running `Command { std: "docker" "start" "-a" "08f5dfe69cecbb32ae1e38247d3a076bb39fb510ec0f1a143a97be1d7653b14c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/variant-3f1ab2f62bdc9efe)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::different_seeds_give_different_output ... ok
[INFO] [stdout] test tests::length_is_same_as_variants ... ok
[INFO] [stdout] test tests::around_half_of_experiments_above_128 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests variant
[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" "08f5dfe69cecbb32ae1e38247d3a076bb39fb510ec0f1a143a97be1d7653b14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f5dfe69cecbb32ae1e38247d3a076bb39fb510ec0f1a143a97be1d7653b14c", kill_on_drop: false }`
[INFO] [stdout] 08f5dfe69cecbb32ae1e38247d3a076bb39fb510ec0f1a143a97be1d7653b14c