[INFO] cloning repository https://github.com/spector-9/rust-todo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spector-9/rust-todo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspector-9%2Frust-todo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspector-9%2Frust-todo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7853c4009c5962b233b98783010d74424a664cc7
[INFO] building spector-9/rust-todo against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspector-9%2Frust-todo" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spector-9/rust-todo on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/spector-9/rust-todo
[INFO] finished tweaking git repo https://github.com/spector-9/rust-todo
[INFO] tweaked toml for git repo https://github.com/spector-9/rust-todo written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/spector-9/rust-todo 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08e9aacdd5ba0d191b40c711f3ce653dc81df63d8b57252a0c6ee2c7a3dbd993
[INFO] running `Command { std: "docker" "start" "-a" "08e9aacdd5ba0d191b40c711f3ce653dc81df63d8b57252a0c6ee2c7a3dbd993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08e9aacdd5ba0d191b40c711f3ce653dc81df63d8b57252a0c6ee2c7a3dbd993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e9aacdd5ba0d191b40c711f3ce653dc81df63d8b57252a0c6ee2c7a3dbd993", kill_on_drop: false }`
[INFO] [stdout] 08e9aacdd5ba0d191b40c711f3ce653dc81df63d8b57252a0c6ee2c7a3dbd993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63ec6dd02bb5fd7f4c84ab5c6fb53f3c310e759321809b223321ab4d312c45c0
[INFO] running `Command { std: "docker" "start" "-a" "63ec6dd02bb5fd7f4c84ab5c6fb53f3c310e759321809b223321ab4d312c45c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling todo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tag_print`
[INFO] [stdout]   --> src/to.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn format_todo(&self, tag_print: bool) -> String {
[INFO] [stdout]    |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag_print`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "63ec6dd02bb5fd7f4c84ab5c6fb53f3c310e759321809b223321ab4d312c45c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ec6dd02bb5fd7f4c84ab5c6fb53f3c310e759321809b223321ab4d312c45c0", kill_on_drop: false }`
[INFO] [stdout] 63ec6dd02bb5fd7f4c84ab5c6fb53f3c310e759321809b223321ab4d312c45c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b634b10e22998bfe147907c103eaeb79595632c8d48a5a7fc746d991493f6a42
[INFO] running `Command { std: "docker" "start" "-a" "b634b10e22998bfe147907c103eaeb79595632c8d48a5a7fc746d991493f6a42", kill_on_drop: false }`
[INFO] [stderr]    Compiling todo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tag_print`
[INFO] [stdout]   --> src/to.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn format_todo(&self, tag_print: bool) -> String {
[INFO] [stdout]    |                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tag_print`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "b634b10e22998bfe147907c103eaeb79595632c8d48a5a7fc746d991493f6a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b634b10e22998bfe147907c103eaeb79595632c8d48a5a7fc746d991493f6a42", kill_on_drop: false }`
[INFO] [stdout] b634b10e22998bfe147907c103eaeb79595632c8d48a5a7fc746d991493f6a42