[INFO] fetching crate boltdb 0.0.1...
[INFO] testing boltdb-0.0.1 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate boltdb 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate boltdb 0.0.1 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate boltdb 0.0.1
[INFO] finished tweaking crates.io crate boltdb 0.0.1
[INFO] tweaked toml for crates.io crate boltdb 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate boltdb 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eeef6c1c492aa2e9ab2e7bd97fb5433045d6b8242bf2e535d857387f2ad91b24
[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" "eeef6c1c492aa2e9ab2e7bd97fb5433045d6b8242bf2e535d857387f2ad91b24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeef6c1c492aa2e9ab2e7bd97fb5433045d6b8242bf2e535d857387f2ad91b24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeef6c1c492aa2e9ab2e7bd97fb5433045d6b8242bf2e535d857387f2ad91b24", kill_on_drop: false }`
[INFO] [stdout] eeef6c1c492aa2e9ab2e7bd97fb5433045d6b8242bf2e535d857387f2ad91b24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--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] 0fdc9054cd4dd12a65d90aacb7967349a8d429af09c6eef92448bdaee574c1db
[INFO] running `Command { std: "docker" "start" "-a" "0fdc9054cd4dd12a65d90aacb7967349a8d429af09c6eef92448bdaee574c1db", kill_on_drop: false }`
[INFO] [stderr]    Compiling boltdb v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "0fdc9054cd4dd12a65d90aacb7967349a8d429af09c6eef92448bdaee574c1db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fdc9054cd4dd12a65d90aacb7967349a8d429af09c6eef92448bdaee574c1db", kill_on_drop: false }`
[INFO] [stdout] 0fdc9054cd4dd12a65d90aacb7967349a8d429af09c6eef92448bdaee574c1db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 174ce1d561d95a4e278ed60e4268e8fc0fccad9e8d15c33c4529a8039d111e18
[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" "174ce1d561d95a4e278ed60e4268e8fc0fccad9e8d15c33c4529a8039d111e18", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling boltdb v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `rust_write`
[INFO] [stdout]  --> examples/cross-lang/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn rust_write() {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rust_read`
[INFO] [stdout]  --> examples/cross-lang/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn rust_read() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `echo`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `examples/echo.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boltdb` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "174ce1d561d95a4e278ed60e4268e8fc0fccad9e8d15c33c4529a8039d111e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "174ce1d561d95a4e278ed60e4268e8fc0fccad9e8d15c33c4529a8039d111e18", kill_on_drop: false }`
[INFO] [stdout] 174ce1d561d95a4e278ed60e4268e8fc0fccad9e8d15c33c4529a8039d111e18