[INFO] fetching crate git-box 0.2.0...
[INFO] testing git-box-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate git-box 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate git-box 0.2.0 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 git-box 0.2.0
[INFO] finished tweaking crates.io crate git-box 0.2.0
[INFO] tweaked toml for crates.io crate git-box 0.2.0 written to /workspace/builds/worker-2/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] 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] 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" "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] 2080fa35a825c6f8d2d96b980898b9304b36cb3bf30fccb1bf7c0bf69d57f1a6
[INFO] running `Command { std: "docker" "start" "-a" "2080fa35a825c6f8d2d96b980898b9304b36cb3bf30fccb1bf7c0bf69d57f1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2080fa35a825c6f8d2d96b980898b9304b36cb3bf30fccb1bf7c0bf69d57f1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2080fa35a825c6f8d2d96b980898b9304b36cb3bf30fccb1bf7c0bf69d57f1a6", kill_on_drop: false }`
[INFO] [stdout] 2080fa35a825c6f8d2d96b980898b9304b36cb3bf30fccb1bf7c0bf69d57f1a6
[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" "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] 890c9e9f1dfae15889715e81de481986a45d6fbacd9dcde5f8a471e0c74d5ac1
[INFO] running `Command { std: "docker" "start" "-a" "890c9e9f1dfae15889715e81de481986a45d6fbacd9dcde5f8a471e0c74d5ac1", kill_on_drop: false }`
[INFO] [stderr] error: multiple packages link to native library `ssh2`, but a native library can be linked only once
[INFO] [stderr] 
[INFO] [stderr] package `libssh2-sys v0.1.41`
[INFO] [stderr]     ... which is depended on by `ssh2 v0.2.15`
[INFO] [stderr]     ... which is depended on by `git-box v0.2.0 (/opt/rustwide/workdir)`
[INFO] [stderr] links to native library `ssh2`
[INFO] [stderr] 
[INFO] [stderr] package `libssh2-sys v0.2.21`
[INFO] [stderr]     ... which is depended on by `libgit2-sys v0.3.12`
[INFO] [stderr]     ... which is depended on by `git2 v0.3.4`
[INFO] [stderr]     ... which is depended on by `git-box v0.2.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `ssh2`
[INFO] running `Command { std: "docker" "inspect" "890c9e9f1dfae15889715e81de481986a45d6fbacd9dcde5f8a471e0c74d5ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "890c9e9f1dfae15889715e81de481986a45d6fbacd9dcde5f8a471e0c74d5ac1", kill_on_drop: false }`
[INFO] [stdout] 890c9e9f1dfae15889715e81de481986a45d6fbacd9dcde5f8a471e0c74d5ac1