[INFO] fetching crate qcv 0.2.0...
[INFO] checking qcv-0.2.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate qcv 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate qcv 0.2.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qcv 0.2.0
[INFO] finished tweaking crates.io crate qcv 0.2.0
[INFO] tweaked toml for crates.io crate qcv 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate qcv 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded include-flate v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44e05986a529207be3f8848e79b6f7fd74d65bcd05f7ad5e5e0c20d2c2deae5f
[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" "44e05986a529207be3f8848e79b6f7fd74d65bcd05f7ad5e5e0c20d2c2deae5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e05986a529207be3f8848e79b6f7fd74d65bcd05f7ad5e5e0c20d2c2deae5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e05986a529207be3f8848e79b6f7fd74d65bcd05f7ad5e5e0c20d2c2deae5f", kill_on_drop: false }`
[INFO] [stdout] 44e05986a529207be3f8848e79b6f7fd74d65bcd05f7ad5e5e0c20d2c2deae5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1295fcbdfa48a01e21b03263e436ba419dd35bcb26fe225a9b33c2675b885b6b
[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" "1295fcbdfa48a01e21b03263e436ba419dd35bcb26fe225a9b33c2675b885b6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]     Checking rust-embed-utils v5.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling rust-embed-impl v5.5.1
[INFO] [stderr]    Compiling include-flate-codegen v0.1.3
[INFO] [stderr]     Checking include-flate-codegen-exports v0.1.3
[INFO] [stderr]     Checking include-flate v0.1.3
[INFO] [stderr]     Checking rust-embed v5.5.1
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking qcv v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.92s
[INFO] running `Command { std: "docker" "inspect" "1295fcbdfa48a01e21b03263e436ba419dd35bcb26fe225a9b33c2675b885b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1295fcbdfa48a01e21b03263e436ba419dd35bcb26fe225a9b33c2675b885b6b", kill_on_drop: false }`
[INFO] [stdout] 1295fcbdfa48a01e21b03263e436ba419dd35bcb26fe225a9b33c2675b885b6b