[INFO] cloning repository https://github.com/k3nder/mcwr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k3nder/mcwr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk3nder%2Fmcwr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk3nder%2Fmcwr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9599827478c37be8e9ad5aa0984c0e140725c2a3
[INFO] building k3nder/mcwr against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk3nder%2Fmcwr" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k3nder/mcwr on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k3nder/mcwr
[INFO] finished tweaking git repo https://github.com/k3nder/mcwr
[INFO] tweaked toml for git repo https://github.com/k3nder/mcwr written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/k3nder/mcwr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded translateutil v0.1.0
[INFO] [stderr]   Downloaded bzip2-sys v0.1.12+1.0.8
[INFO] [stderr]   Downloaded mcd v0.3.2-a
[INFO] [stderr]   Downloaded dwldutil v2.0.2
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10642c9cf359a430c37f68f5d9c52be032e375e4c6fe3597308eeb3bc80d2f06
[INFO] running `Command { std: "docker" "start" "-a" "10642c9cf359a430c37f68f5d9c52be032e375e4c6fe3597308eeb3bc80d2f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10642c9cf359a430c37f68f5d9c52be032e375e4c6fe3597308eeb3bc80d2f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10642c9cf359a430c37f68f5d9c52be032e375e4c6fe3597308eeb3bc80d2f06", kill_on_drop: false }`
[INFO] [stdout] 10642c9cf359a430c37f68f5d9c52be032e375e4c6fe3597308eeb3bc80d2f06
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46784ec757e0a295162abf616ef5d572a17338203405a4838edb5609cb062c4c
[INFO] running `Command { std: "docker" "start" "-a" "46784ec757e0a295162abf616ef5d572a17338203405a4838edb5609cb062c4c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-signal v0.2.10
[INFO] [stderr]    Compiling async-net v2.0.0
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[INFO] [stderr]    Compiling dwldutil v2.0.2
[INFO] [stderr]    Compiling mcd v0.3.2-a
[INFO] [stderr]    Compiling mcwr v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `run`
[INFO] [stdout]   --> src/cline.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             run,
[INFO] [stdout]    |             ^^^ help: try ignoring the field: `run: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `silent`
[INFO] [stdout]   --> src/cline.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             silent,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `silent: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interactive.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 | /         version.run(
[INFO] [stdout] 124 | |             |l| println!("{}", l),
[INFO] [stdout] 125 | |             |e| println!("{}", e),
[INFO] [stdout] 126 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let _ = version.run(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interactive.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             download_version(term);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = download_version(term);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interactive.rs:190:5
[INFO] [stdout]     |
[INFO] [stdout] 190 | /     version.run(
[INFO] [stdout] 191 | |         |l| println!("{}", l),
[INFO] [stdout] 192 | |         |e| println!("{}", e),
[INFO] [stdout] 193 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let _ = version.run(
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 45s
[INFO] running `Command { std: "docker" "inspect" "46784ec757e0a295162abf616ef5d572a17338203405a4838edb5609cb062c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46784ec757e0a295162abf616ef5d572a17338203405a4838edb5609cb062c4c", kill_on_drop: false }`
[INFO] [stdout] 46784ec757e0a295162abf616ef5d572a17338203405a4838edb5609cb062c4c
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d75f3c91a80804d7aa92eea7116a16e6fbee5247e4a8b3236b4f23e2ec131f81
[INFO] running `Command { std: "docker" "start" "-a" "d75f3c91a80804d7aa92eea7116a16e6fbee5247e4a8b3236b4f23e2ec131f81", kill_on_drop: false }`
[INFO] [stderr]    Compiling mcwr v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `run`
[INFO] [stdout]   --> src/cline.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             run,
[INFO] [stdout]    |             ^^^ help: try ignoring the field: `run: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `silent`
[INFO] [stdout]   --> src/cline.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             silent,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `silent: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interactive.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 | /         version.run(
[INFO] [stdout] 124 | |             |l| println!("{}", l),
[INFO] [stdout] 125 | |             |e| println!("{}", e),
[INFO] [stdout] 126 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let _ = version.run(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interactive.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             download_version(term);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = download_version(term);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interactive.rs:190:5
[INFO] [stdout]     |
[INFO] [stdout] 190 | /     version.run(
[INFO] [stdout] 191 | |         |l| println!("{}", l),
[INFO] [stdout] 192 | |         |e| println!("{}", e),
[INFO] [stdout] 193 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let _ = version.run(
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.12s
[INFO] running `Command { std: "docker" "inspect" "d75f3c91a80804d7aa92eea7116a16e6fbee5247e4a8b3236b4f23e2ec131f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d75f3c91a80804d7aa92eea7116a16e6fbee5247e4a8b3236b4f23e2ec131f81", kill_on_drop: false }`
[INFO] [stdout] d75f3c91a80804d7aa92eea7116a16e6fbee5247e4a8b3236b4f23e2ec131f81