[INFO] fetching crate rusty_alfred 0.1.1...
[INFO] checking rusty_alfred-0.1.1 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate rusty_alfred 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rusty_alfred 0.1.1 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusty_alfred 0.1.1
[INFO] finished tweaking crates.io crate rusty_alfred 0.1.1
[INFO] tweaked toml for crates.io crate rusty_alfred 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1700cda29021ac8017e82d39e6c10a5af4e49354ee736191b925eb68142a717c
[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" "1700cda29021ac8017e82d39e6c10a5af4e49354ee736191b925eb68142a717c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1700cda29021ac8017e82d39e6c10a5af4e49354ee736191b925eb68142a717c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1700cda29021ac8017e82d39e6c10a5af4e49354ee736191b925eb68142a717c", kill_on_drop: false }`
[INFO] [stdout] 1700cda29021ac8017e82d39e6c10a5af4e49354ee736191b925eb68142a717c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f23d2ccd22501b9164007f8db526e3142bad29206f31fdcdaa52863f5fd18b8e
[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" "f23d2ccd22501b9164007f8db526e3142bad29206f31fdcdaa52863f5fd18b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking rustc-demangle v0.1.17
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]    Compiling serde_codegen v0.8.23
[INFO] [stderr]     Checking error-chain v0.5.0
[INFO] [stderr]    Compiling serde_derive v0.8.23
[INFO] [stderr]     Checking rusty_alfred v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(proc_macro)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(proc_macro)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.25s
[INFO] running `Command { std: "docker" "inspect" "f23d2ccd22501b9164007f8db526e3142bad29206f31fdcdaa52863f5fd18b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f23d2ccd22501b9164007f8db526e3142bad29206f31fdcdaa52863f5fd18b8e", kill_on_drop: false }`
[INFO] [stdout] f23d2ccd22501b9164007f8db526e3142bad29206f31fdcdaa52863f5fd18b8e