[INFO] fetching crate git-box 0.2.0...
[INFO] testing git-box-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate git-box 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate git-box 0.2.0 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 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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded url v0.2.38
[INFO] [stderr]   Downloaded num-iter v0.1.42
[INFO] [stderr]   Downloaded urlparse v0.7.3
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded uuid v0.4.0
[INFO] [stderr]   Downloaded num v0.1.42
[INFO] [stderr]   Downloaded lazy_static v0.1.16
[INFO] [stderr]   Downloaded bit-vec v0.4.4
[INFO] [stderr]   Downloaded git2 v0.3.4
[INFO] [stderr]   Downloaded bitflags v0.3.3
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded strsim v0.5.2
[INFO] [stderr]   Downloaded clippy v0.0.302
[INFO] [stderr]   Downloaded curl v0.2.19
[INFO] [stderr]   Downloaded bufstream v0.1.4
[INFO] [stderr]   Downloaded hex v0.2.0
[INFO] [stderr]   Downloaded libsqlite3-sys v0.4.0
[INFO] [stderr]   Downloaded sha1 v0.1.1
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded vergen v0.1.1
[INFO] [stderr]   Downloaded postgres v0.11.12
[INFO] [stderr]   Downloaded rusqlite v0.6.1
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded rustc-serialize v0.3.24
[INFO] [stderr]   Downloaded docopt v0.6.86
[INFO] [stderr]   Downloaded sodium-sys v0.0.4
[INFO] [stderr]   Downloaded phf_shared v0.7.15
[INFO] [stderr]   Downloaded uuid v0.1.18
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] [stderr]   Downloaded openssl v0.7.14
[INFO] [stderr]   Downloaded libssh2-sys v0.1.41
[INFO] [stderr]   Downloaded phf v0.7.15
[INFO] [stderr]   Downloaded openssl-sys-extras v0.7.14
[INFO] [stderr]   Downloaded warheadhateus v0.2.1
[INFO] [stderr]   Downloaded libgit2-sys v0.3.12
[INFO] [stderr]   Downloaded curl-sys v0.1.35
[INFO] [stderr]   Downloaded ssh2 v0.2.15
[INFO] [stderr]   Downloaded mysql v1.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] fa98b19aab51abd9648b443e8859922e79a9842dc09ad578562228dea06af45d
[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" "fa98b19aab51abd9648b443e8859922e79a9842dc09ad578562228dea06af45d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa98b19aab51abd9648b443e8859922e79a9842dc09ad578562228dea06af45d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa98b19aab51abd9648b443e8859922e79a9842dc09ad578562228dea06af45d", kill_on_drop: false }`
[INFO] [stdout] fa98b19aab51abd9648b443e8859922e79a9842dc09ad578562228dea06af45d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] fef8d33d1e9f2681d346658391abb521ba7a36e82b8f29e832a2adacd50c323a
[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" "fef8d33d1e9f2681d346658391abb521ba7a36e82b8f29e832a2adacd50c323a", 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 v0.2.20`
[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" "fef8d33d1e9f2681d346658391abb521ba7a36e82b8f29e832a2adacd50c323a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef8d33d1e9f2681d346658391abb521ba7a36e82b8f29e832a2adacd50c323a", kill_on_drop: false }`
[INFO] [stdout] fef8d33d1e9f2681d346658391abb521ba7a36e82b8f29e832a2adacd50c323a