[INFO] fetching crate cowrc 0.0.4...
[INFO] checking cowrc-0.0.4 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate cowrc 0.0.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate cowrc 0.0.4 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cowrc 0.0.4
[INFO] finished tweaking crates.io crate cowrc 0.0.4
[INFO] tweaked toml for crates.io crate cowrc 0.0.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1f2eb42e8edfd2c74d4ecc5c61ac494b6c4dec800acd289d3468f805162dc91
[INFO] running `Command { std: "docker" "start" "-a" "b1f2eb42e8edfd2c74d4ecc5c61ac494b6c4dec800acd289d3468f805162dc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1f2eb42e8edfd2c74d4ecc5c61ac494b6c4dec800acd289d3468f805162dc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f2eb42e8edfd2c74d4ecc5c61ac494b6c4dec800acd289d3468f805162dc91", kill_on_drop: false }`
[INFO] [stdout] b1f2eb42e8edfd2c74d4ecc5c61ac494b6c4dec800acd289d3468f805162dc91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14545ba3ce959d1ea1f4583e89f023768b6afc24c439c36a3b9f024d9bbc9bc5
[INFO] running `Command { std: "docker" "start" "-a" "14545ba3ce959d1ea1f4583e89f023768b6afc24c439c36a3b9f024d9bbc9bc5", kill_on_drop: false }`
[INFO] [stderr]     Checking cowrc v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `make_unique` found for struct `Rc<T>` in the current scope
[INFO] [stdout]   --> src/lib.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |         self.v.make_unique()
[INFO] [stdout]    |                ^^^^^^^^^^^ method not found in `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `make_unique` found for struct `Arc<T>` in the current scope
[INFO] [stdout]   --> src/lib.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 55 |         self.v.make_unique()
[INFO] [stdout]    |                ^^^^^^^^^^^ method not found in `Arc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cowrc`
[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] error[E0599]: no method named `make_unique` found for struct `Rc<T>` in the current scope
[INFO] [stdout]   --> src/lib.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |         self.v.make_unique()
[INFO] [stdout]    |                ^^^^^^^^^^^ method not found in `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `make_unique` found for struct `Arc<T>` in the current scope
[INFO] [stdout]   --> src/lib.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 55 |         self.v.make_unique()
[INFO] [stdout]    |                ^^^^^^^^^^^ method not found in `Arc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "14545ba3ce959d1ea1f4583e89f023768b6afc24c439c36a3b9f024d9bbc9bc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14545ba3ce959d1ea1f4583e89f023768b6afc24c439c36a3b9f024d9bbc9bc5", kill_on_drop: false }`
[INFO] [stdout] 14545ba3ce959d1ea1f4583e89f023768b6afc24c439c36a3b9f024d9bbc9bc5