[INFO] crate vkcargo 0.45.1 is already in cache
[INFO] checking vkcargo-0.45.1 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate vkcargo 0.45.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate vkcargo 0.45.1 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vkcargo 0.45.1
[INFO] finished tweaking crates.io crate vkcargo 0.45.1
[INFO] tweaked toml for crates.io crate vkcargo 0.45.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate vkcargo 0.45.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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] 81f676321a4b2684af63b704e6ae5b8c5ddc2f6661ac3e604446e5f6fd025820
[INFO] running `Command { std: "docker" "start" "-a" "81f676321a4b2684af63b704e6ae5b8c5ddc2f6661ac3e604446e5f6fd025820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81f676321a4b2684af63b704e6ae5b8c5ddc2f6661ac3e604446e5f6fd025820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81f676321a4b2684af63b704e6ae5b8c5ddc2f6661ac3e604446e5f6fd025820", kill_on_drop: false }`
[INFO] [stdout] 81f676321a4b2684af63b704e6ae5b8c5ddc2f6661ac3e604446e5f6fd025820
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3190fa3328b699816a91d365b94de7e6a7978f29aa62d996440c2071b2ac367f
[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" "3190fa3328b699816a91d365b94de7e6a7978f29aa62d996440c2071b2ac367f", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking opener v0.4.1
[INFO] [stderr]     Checking shell-escape v0.1.4
[INFO] [stderr]     Checking bytesize v1.0.0
[INFO] [stderr]     Checking rustc-workspace-hack v1.0.0
[INFO] [stderr]     Checking humantime v2.0.0
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking vte v0.3.3
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking filetime v0.2.9
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]     Checking strip-ansi-escapes v0.1.0
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tar v0.4.26
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.3
[INFO] [stderr]    Compiling curl-sys v0.4.30+curl-7.69.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.16
[INFO] [stderr]    Compiling libgit2-sys v0.12.2+1.0.0
[INFO] [stderr]     Checking ignore v0.4.14
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking git2 v0.13.1
[INFO] [stderr]     Checking git2-curl v0.14.0
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking cargo-platform v0.1.1
[INFO] [stderr]     Checking serde_ignored v0.1.1
[INFO] [stderr]     Checking crates-io v0.31.0
[INFO] [stderr]     Checking rustfix v0.5.1
[INFO] [stderr]     Checking vkcargo v0.45.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/cargo/sources/git/utils.rs:841:17
[INFO] [stdout]     |
[INFO] [stdout] 841 |                 mem::replace(repo, new);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/cargo/lib.rs:1:24
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vkcargo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/cargo/sources/git/utils.rs:841:17
[INFO] [stdout]     |
[INFO] [stdout] 841 |                 mem::replace(repo, new);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3190fa3328b699816a91d365b94de7e6a7978f29aa62d996440c2071b2ac367f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3190fa3328b699816a91d365b94de7e6a7978f29aa62d996440c2071b2ac367f", kill_on_drop: false }`
[INFO] [stdout] 3190fa3328b699816a91d365b94de7e6a7978f29aa62d996440c2071b2ac367f