[INFO] fetching crate err-derive 0.2.4...
[INFO] checking err-derive-0.2.4 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate err-derive 0.2.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate err-derive 0.2.4 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate err-derive 0.2.4
[INFO] finished tweaking crates.io crate err-derive 0.2.4
[INFO] tweaked toml for crates.io crate err-derive 0.2.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate err-derive 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d400598d2b1d6ff90bb8ae59c696a0800cde240fe9a1c52aded5fbdf7272c74f
[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" "d400598d2b1d6ff90bb8ae59c696a0800cde240fe9a1c52aded5fbdf7272c74f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d400598d2b1d6ff90bb8ae59c696a0800cde240fe9a1c52aded5fbdf7272c74f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d400598d2b1d6ff90bb8ae59c696a0800cde240fe9a1c52aded5fbdf7272c74f", kill_on_drop: false }`
[INFO] [stdout] d400598d2b1d6ff90bb8ae59c696a0800cde240fe9a1c52aded5fbdf7272c74f
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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] f80f00cfb8112b625ba336acf37d52eb27246f6038fd0229b3bec43c7fb52d83
[INFO] running `Command { std: "docker" "start" "-a" "f80f00cfb8112b625ba336acf37d52eb27246f6038fd0229b3bec43c7fb52d83", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking bytecount v0.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.1
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking pulldown-cmark v0.2.0
[INFO] [stderr]     Checking quote v1.0.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.33
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking synstructure v0.12.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling err-derive v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cargo_metadata v0.6.4
[INFO] [stderr]     Checking skeptic v0.13.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.64s
[INFO] running `Command { std: "docker" "inspect" "f80f00cfb8112b625ba336acf37d52eb27246f6038fd0229b3bec43c7fb52d83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80f00cfb8112b625ba336acf37d52eb27246f6038fd0229b3bec43c7fb52d83", kill_on_drop: false }`
[INFO] [stdout] f80f00cfb8112b625ba336acf37d52eb27246f6038fd0229b3bec43c7fb52d83