[INFO] updating cached repository https://github.com/GopherJ/how-to-inherit-emitter-in-rust
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bac9678261fd0bcfd4655d945efffed374cb7466
[INFO] testing GopherJ/how-to-inherit-emitter-in-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGopherJ%2Fhow-to-inherit-emitter-in-rust" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GopherJ/how-to-inherit-emitter-in-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/GopherJ/how-to-inherit-emitter-in-rust
[INFO] finished tweaking git repo https://github.com/GopherJ/how-to-inherit-emitter-in-rust
[INFO] tweaked toml for git repo https://github.com/GopherJ/how-to-inherit-emitter-in-rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/GopherJ/how-to-inherit-emitter-in-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f17ffbb425c5559f0029a514612bbadc5bcc68f45de4a2093abd49c9d1f7fbb0
[INFO] running `"docker" "start" "-a" "f17ffbb425c5559f0029a514612bbadc5bcc68f45de4a2093abd49c9d1f7fbb0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling ahash v0.2.18
[INFO] [stderr]    Compiling emitbrown v0.1.7
[INFO] [stderr]    Compiling selfreference v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let t = Test::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `i_am_mut_borrowing`
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         pub fn i_am_mut_borrowing(&mut self) -> &mut Self {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.32s
[INFO] running `"docker" "inspect" "f17ffbb425c5559f0029a514612bbadc5bcc68f45de4a2093abd49c9d1f7fbb0"`
[INFO] running `"docker" "rm" "-f" "f17ffbb425c5559f0029a514612bbadc5bcc68f45de4a2093abd49c9d1f7fbb0"`
[INFO] [stdout] f17ffbb425c5559f0029a514612bbadc5bcc68f45de4a2093abd49c9d1f7fbb0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fbc83771f8a22c50f0494804ef24c571079970d33ddde89ea468b5b6a249cb23
[INFO] running `"docker" "start" "-a" "fbc83771f8a22c50f0494804ef24c571079970d33ddde89ea468b5b6a249cb23"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling selfreference v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let t = Test::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "fbc83771f8a22c50f0494804ef24c571079970d33ddde89ea468b5b6a249cb23"`
[INFO] running `"docker" "rm" "-f" "fbc83771f8a22c50f0494804ef24c571079970d33ddde89ea468b5b6a249cb23"`
[INFO] [stdout] fbc83771f8a22c50f0494804ef24c571079970d33ddde89ea468b5b6a249cb23
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e113702da02c558427ae7a7e597cd22e17827684f9b4f612b0fa43d8aa5d801f
[INFO] running `"docker" "start" "-a" "e113702da02c558427ae7a7e597cd22e17827684f9b4f612b0fa43d8aa5d801f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let t = Test::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/selfreference-55df170ce9e79f4b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e113702da02c558427ae7a7e597cd22e17827684f9b4f612b0fa43d8aa5d801f"`
[INFO] running `"docker" "rm" "-f" "e113702da02c558427ae7a7e597cd22e17827684f9b4f612b0fa43d8aa5d801f"`
[INFO] [stdout] e113702da02c558427ae7a7e597cd22e17827684f9b4f612b0fa43d8aa5d801f