[INFO] updating cached repository https://github.com/dfschwabe/hellorust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0436db2e93b85e14062da6423489601fbda73f8e
[INFO] checking dfschwabe/hellorust against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdfschwabe%2Fhellorust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dfschwabe/hellorust on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking git repo https://github.com/dfschwabe/hellorust
[INFO] finished tweaking git repo https://github.com/dfschwabe/hellorust
[INFO] tweaked toml for git repo https://github.com/dfschwabe/hellorust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dfschwabe/hellorust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7325e4802a9688e2f49af254e660d9e5b1ceb0679ee1d3fd4ec2b483205c77a9
[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" "7325e4802a9688e2f49af254e660d9e5b1ceb0679ee1d3fd4ec2b483205c77a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7325e4802a9688e2f49af254e660d9e5b1ceb0679ee1d3fd4ec2b483205c77a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7325e4802a9688e2f49af254e660d9e5b1ceb0679ee1d3fd4ec2b483205c77a9", kill_on_drop: false }`
[INFO] [stdout] 7325e4802a9688e2f49af254e660d9e5b1ceb0679ee1d3fd4ec2b483205c77a9
[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" "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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ef30e65643077e68ce3f4ff5455bb8a0114f3575ac64613e7f5a3c75d89a0ae
[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" "9ef30e65643077e68ce3f4ff5455bb8a0114f3575ac64613e7f5a3c75d89a0ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking float-cmp v0.6.0
[INFO] [stderr]     Checking predicates v1.0.4
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking hellorust v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling mockall_derive v0.6.0
[INFO] [stderr]     Checking mockall v0.6.0
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]  --> src/shapes.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg_attr(test, mockall::automock)]
[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]   = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]  --> src/shapes.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg_attr(test, mockall::automock)]
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]   = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.31s
[INFO] running `Command { std: "docker" "inspect" "9ef30e65643077e68ce3f4ff5455bb8a0114f3575ac64613e7f5a3c75d89a0ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ef30e65643077e68ce3f4ff5455bb8a0114f3575ac64613e7f5a3c75d89a0ae", kill_on_drop: false }`
[INFO] [stdout] 9ef30e65643077e68ce3f4ff5455bb8a0114f3575ac64613e7f5a3c75d89a0ae