[INFO] fetching crate shuttle-core 0.3.1...
[INFO] checking shuttle-core-0.3.1 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate shuttle-core 0.3.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate shuttle-core 0.3.1 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shuttle-core 0.3.1
[INFO] finished tweaking crates.io crate shuttle-core 0.3.1
[INFO] tweaked toml for crates.io crate shuttle-core 0.3.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c680b30e1f1d62439f6de3e901f09620e49b330a5bad88fb56b55ad780539360
[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" "c680b30e1f1d62439f6de3e901f09620e49b330a5bad88fb56b55ad780539360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c680b30e1f1d62439f6de3e901f09620e49b330a5bad88fb56b55ad780539360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c680b30e1f1d62439f6de3e901f09620e49b330a5bad88fb56b55ad780539360", kill_on_drop: false }`
[INFO] [stdout] c680b30e1f1d62439f6de3e901f09620e49b330a5bad88fb56b55ad780539360
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5af58e0c979f7d53cf4a282284f42b99507edaeb0edb6ce2eb682c2b959a4bd2
[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" "5af58e0c979f7d53cf4a282284f42b99507edaeb0edb6ce2eb682c2b959a4bd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling crc16 v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking base32 v0.3.1
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling libsodium-sys v0.0.16
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking bigdecimal v0.0.10
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking sodiumoxide v0.0.16
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde-xdr v0.5.1
[INFO] [stderr]     Checking shuttle-core v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.93s
[INFO] running `Command { std: "docker" "inspect" "5af58e0c979f7d53cf4a282284f42b99507edaeb0edb6ce2eb682c2b959a4bd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af58e0c979f7d53cf4a282284f42b99507edaeb0edb6ce2eb682c2b959a4bd2", kill_on_drop: false }`
[INFO] [stdout] 5af58e0c979f7d53cf4a282284f42b99507edaeb0edb6ce2eb682c2b959a4bd2