[INFO] fetching crate unshield 0.2.0...
[INFO] checking unshield-0.2.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate unshield 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate unshield 0.2.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unshield 0.2.0
[INFO] finished tweaking crates.io crate unshield 0.2.0
[INFO] tweaked toml for crates.io crate unshield 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate unshield 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arraydeque v0.4.5
[INFO] [stderr]   Downloaded async-executor v0.1.2
[INFO] [stderr]   Downloaded explode v0.1.2
[INFO] [stderr]   Downloaded async-task v3.0.0
[INFO] [stderr]   Downloaded multitask v0.2.0
[INFO] [stderr]   Downloaded futures-lite v0.1.11
[INFO] [stderr]   Downloaded waker-fn v1.0.0
[INFO] [stderr]   Downloaded parking v1.0.6
[INFO] [stderr]   Downloaded fastrand v1.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 87a2706687e643e084317ee6dbbdece942fbe757fb17bc8682d304cdb9130f73
[INFO] running `Command { std: "docker" "start" "-a" "87a2706687e643e084317ee6dbbdece942fbe757fb17bc8682d304cdb9130f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87a2706687e643e084317ee6dbbdece942fbe757fb17bc8682d304cdb9130f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a2706687e643e084317ee6dbbdece942fbe757fb17bc8682d304cdb9130f73", kill_on_drop: false }`
[INFO] [stdout] 87a2706687e643e084317ee6dbbdece942fbe757fb17bc8682d304cdb9130f73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75d08b415a542d1be029dc810074ba6edc948ccf17806f28d1056f4fe76cc797
[INFO] running `Command { std: "docker" "start" "-a" "75d08b415a542d1be029dc810074ba6edc948ccf17806f28d1056f4fe76cc797", kill_on_drop: false }`
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking fastrand v1.3.4
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking waker-fn v1.0.0
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking explode v0.1.2
[INFO] [stderr]     Checking unshield v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.48s
[INFO] running `Command { std: "docker" "inspect" "75d08b415a542d1be029dc810074ba6edc948ccf17806f28d1056f4fe76cc797", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d08b415a542d1be029dc810074ba6edc948ccf17806f28d1056f4fe76cc797", kill_on_drop: false }`
[INFO] [stdout] 75d08b415a542d1be029dc810074ba6edc948ccf17806f28d1056f4fe76cc797