[INFO] fetching crate singularity 0.5.1...
[INFO] checking singularity-0.5.1 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate singularity 0.5.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate singularity 0.5.1 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate singularity 0.5.1
[INFO] finished tweaking crates.io crate singularity 0.5.1
[INFO] tweaked toml for crates.io crate singularity 0.5.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate singularity 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded confy v0.4.0
[INFO] [stderr]   Downloaded qstring v0.7.2
[INFO] [stderr]   Downloaded chunked_transfer v1.2.0
[INFO] [stderr]   Downloaded ureq v1.4.1
[INFO] [stderr]   Downloaded fern v0.6.0
[INFO] [stderr]   Downloaded webpki-roots v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a50b15c159058f3783b52b947f68281e2d3a937e6ffcd9cc296650327528a8f0
[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" "a50b15c159058f3783b52b947f68281e2d3a937e6ffcd9cc296650327528a8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a50b15c159058f3783b52b947f68281e2d3a937e6ffcd9cc296650327528a8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a50b15c159058f3783b52b947f68281e2d3a937e6ffcd9cc296650327528a8f0", kill_on_drop: false }`
[INFO] [stdout] a50b15c159058f3783b52b947f68281e2d3a937e6ffcd9cc296650327528a8f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2212af707dd6632f876891bcdc06dabc6c8ee9f19748b0401a75079c7bcdbe0f
[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" "2212af707dd6632f876891bcdc06dabc6c8ee9f19748b0401a75079c7bcdbe0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking chunked_transfer v1.2.0
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling time v0.2.20
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking webpki-roots v0.20.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking cookie v0.14.2
[INFO] [stderr]     Checking structopt v0.3.17
[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking ureq v1.4.1
[INFO] [stderr]     Checking confy v0.4.0
[INFO] [stderr]     Checking singularity v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.14s
[INFO] running `Command { std: "docker" "inspect" "2212af707dd6632f876891bcdc06dabc6c8ee9f19748b0401a75079c7bcdbe0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2212af707dd6632f876891bcdc06dabc6c8ee9f19748b0401a75079c7bcdbe0f", kill_on_drop: false }`
[INFO] [stdout] 2212af707dd6632f876891bcdc06dabc6c8ee9f19748b0401a75079c7bcdbe0f