[INFO] fetching crate mccs 0.2.0...
[INFO] testing mccs-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mccs 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate mccs 0.2.0
[INFO] finished tweaking crates.io crate mccs 0.2.0
[INFO] tweaked toml for crates.io crate mccs 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mccs 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 205c160dc44af906a12e6efd3483bab263ee5db7366d34b6ced1e84f6709285d
[INFO] running `Command { std: "docker" "start" "-a" "205c160dc44af906a12e6efd3483bab263ee5db7366d34b6ced1e84f6709285d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "205c160dc44af906a12e6efd3483bab263ee5db7366d34b6ced1e84f6709285d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "205c160dc44af906a12e6efd3483bab263ee5db7366d34b6ced1e84f6709285d", kill_on_drop: false }`
[INFO] [stdout] 205c160dc44af906a12e6efd3483bab263ee5db7366d34b6ced1e84f6709285d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f3fe36b6065caf4a388f50b3ca4d3bd17bb5e8bdb4a531ad44aa8a2aec6db19
[INFO] running `Command { std: "docker" "start" "-a" "1f3fe36b6065caf4a388f50b3ca4d3bd17bb5e8bdb4a531ad44aa8a2aec6db19", kill_on_drop: false }`
[INFO] [stderr]    Compiling mccs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:255:19
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn values(&self) -> btree_map::Keys<u8, Option<String>> {
[INFO] [stdout]     |                   ^^^^^     ----------------------------------- the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn values(&self) -> btree_map::Keys<'_, u8, Option<String>> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "1f3fe36b6065caf4a388f50b3ca4d3bd17bb5e8bdb4a531ad44aa8a2aec6db19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f3fe36b6065caf4a388f50b3ca4d3bd17bb5e8bdb4a531ad44aa8a2aec6db19", kill_on_drop: false }`
[INFO] [stdout] 1f3fe36b6065caf4a388f50b3ca4d3bd17bb5e8bdb4a531ad44aa8a2aec6db19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78448d891f8c1b87f54b7ae3db73e3d342614513bc6cb9f4d6b5c4da1f7acf8f
[INFO] running `Command { std: "docker" "start" "-a" "78448d891f8c1b87f54b7ae3db73e3d342614513bc6cb9f4d6b5c4da1f7acf8f", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:255:19
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn values(&self) -> btree_map::Keys<u8, Option<String>> {
[INFO] [stdout]     |                   ^^^^^     ----------------------------------- the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn values(&self) -> btree_map::Keys<'_, u8, Option<String>> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mccs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:255:19
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn values(&self) -> btree_map::Keys<u8, Option<String>> {
[INFO] [stdout]     |                   ^^^^^     ----------------------------------- the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub fn values(&self) -> btree_map::Keys<'_, u8, Option<String>> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "78448d891f8c1b87f54b7ae3db73e3d342614513bc6cb9f4d6b5c4da1f7acf8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78448d891f8c1b87f54b7ae3db73e3d342614513bc6cb9f4d6b5c4da1f7acf8f", kill_on_drop: false }`
[INFO] [stdout] 78448d891f8c1b87f54b7ae3db73e3d342614513bc6cb9f4d6b5c4da1f7acf8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 02fda3e5764e84a68ce357b9b72685ebe956f7282df70c9f7903c1a81cf5520a
[INFO] running `Command { std: "docker" "start" "-a" "02fda3e5764e84a68ce357b9b72685ebe956f7282df70c9f7903c1a81cf5520a", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:255:19
[INFO] [stderr]     |
[INFO] [stderr] 255 |     pub fn values(&self) -> btree_map::Keys<u8, Option<String>> {
[INFO] [stderr]     |                   ^^^^^     ----------------------------------- the same lifetime is hidden here
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 255 |     pub fn values(&self) -> btree_map::Keys<'_, u8, Option<String>> {
[INFO] [stderr]     |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: `mccs` (lib) generated 1 warning
[INFO] [stderr] warning: `mccs` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mccs-b32301077fc75cca)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mccs
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "02fda3e5764e84a68ce357b9b72685ebe956f7282df70c9f7903c1a81cf5520a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02fda3e5764e84a68ce357b9b72685ebe956f7282df70c9f7903c1a81cf5520a", kill_on_drop: false }`
[INFO] [stdout] 02fda3e5764e84a68ce357b9b72685ebe956f7282df70c9f7903c1a81cf5520a