[INFO] fetching crate gmarkov 1.0.0...
[INFO] testing gmarkov-1.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate gmarkov 1.0.0 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate gmarkov 1.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gmarkov 1.0.0
[INFO] finished tweaking crates.io crate gmarkov 1.0.0
[INFO] tweaked toml for crates.io crate gmarkov 1.0.0 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4051407af0d758b52b1ce25c04763dbc770708d4f6ad0ddaf533dd0a610a2bd9
[INFO] running `Command { std: "docker" "start" "-a" "4051407af0d758b52b1ce25c04763dbc770708d4f6ad0ddaf533dd0a610a2bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4051407af0d758b52b1ce25c04763dbc770708d4f6ad0ddaf533dd0a610a2bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4051407af0d758b52b1ce25c04763dbc770708d4f6ad0ddaf533dd0a610a2bd9", kill_on_drop: false }`
[INFO] [stdout] 4051407af0d758b52b1ce25c04763dbc770708d4f6ad0ddaf533dd0a610a2bd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad267054c201d9c4e2f88044708eedd963fb242f64826d9e3cb60893ea1f493c
[INFO] running `Command { std: "docker" "start" "-a" "ad267054c201d9c4e2f88044708eedd963fb242f64826d9e3cb60893ea1f493c", 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_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling gmarkov-lib v0.1.1
[INFO] [stderr]    Compiling gmarkov v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.48s
[INFO] running `Command { std: "docker" "inspect" "ad267054c201d9c4e2f88044708eedd963fb242f64826d9e3cb60893ea1f493c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad267054c201d9c4e2f88044708eedd963fb242f64826d9e3cb60893ea1f493c", kill_on_drop: false }`
[INFO] [stdout] ad267054c201d9c4e2f88044708eedd963fb242f64826d9e3cb60893ea1f493c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3736f87cf55cd95a5e03fac898643b90d653045f84f3fce75dd26de239510e4
[INFO] running `Command { std: "docker" "start" "-a" "d3736f87cf55cd95a5e03fac898643b90d653045f84f3fce75dd26de239510e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmarkov v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "d3736f87cf55cd95a5e03fac898643b90d653045f84f3fce75dd26de239510e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3736f87cf55cd95a5e03fac898643b90d653045f84f3fce75dd26de239510e4", kill_on_drop: false }`
[INFO] [stdout] d3736f87cf55cd95a5e03fac898643b90d653045f84f3fce75dd26de239510e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bdd28f4f70a5bcb5bf8a7bcd1f3412d2cbde1f0e9a0270189d0923a95f0bb71f
[INFO] running `Command { std: "docker" "start" "-a" "bdd28f4f70a5bcb5bf8a7bcd1f3412d2cbde1f0e9a0270189d0923a95f0bb71f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gmarkov-ba2dc2125b86d29f)
[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" "bdd28f4f70a5bcb5bf8a7bcd1f3412d2cbde1f0e9a0270189d0923a95f0bb71f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdd28f4f70a5bcb5bf8a7bcd1f3412d2cbde1f0e9a0270189d0923a95f0bb71f", kill_on_drop: false }`
[INFO] [stdout] bdd28f4f70a5bcb5bf8a7bcd1f3412d2cbde1f0e9a0270189d0923a95f0bb71f