[INFO] cloning repository https://github.com/hegde-atri/my-rust-bible
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hegde-atri/my-rust-bible" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegde-atri%2Fmy-rust-bible", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegde-atri%2Fmy-rust-bible'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f785daf8f561d0633f47cb45cad3e62a5fa56352
[INFO] building hegde-atri/my-rust-bible against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegde-atri%2Fmy-rust-bible" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hegde-atri/my-rust-bible 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/hegde-atri/my-rust-bible
[INFO] finished tweaking git repo https://github.com/hegde-atri/my-rust-bible
[INFO] tweaked toml for git repo https://github.com/hegde-atri/my-rust-bible written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hegde-atri/my-rust-bible 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 58177da0fbd6f575244fe7d1cf865610ffa7a879df1cf4c87d5c40df6a3588df
[INFO] running `Command { std: "docker" "start" "-a" "58177da0fbd6f575244fe7d1cf865610ffa7a879df1cf4c87d5c40df6a3588df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58177da0fbd6f575244fe7d1cf865610ffa7a879df1cf4c87d5c40df6a3588df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58177da0fbd6f575244fe7d1cf865610ffa7a879df1cf4c87d5c40df6a3588df", kill_on_drop: false }`
[INFO] [stdout] 58177da0fbd6f575244fe7d1cf865610ffa7a879df1cf4c87d5c40df6a3588df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e6b2d63d7b7ff4127fe2c4a78f2af154bd9ee7fe18f4bc479fa45c3fac5ca52c
[INFO] running `Command { std: "docker" "start" "-a" "e6b2d63d7b7ff4127fe2c4a78f2af154bd9ee7fe18f4bc479fa45c3fac5ca52c", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `vectors` is never used
[INFO] [stdout]  --> src/standard_collections.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn vectors(){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "e6b2d63d7b7ff4127fe2c4a78f2af154bd9ee7fe18f4bc479fa45c3fac5ca52c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b2d63d7b7ff4127fe2c4a78f2af154bd9ee7fe18f4bc479fa45c3fac5ca52c", kill_on_drop: false }`
[INFO] [stdout] e6b2d63d7b7ff4127fe2c4a78f2af154bd9ee7fe18f4bc479fa45c3fac5ca52c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e1fa91d3bb4b5c077a174df66a2b101c6bf4e62b94db4a9633303f1fa69a721d
[INFO] running `Command { std: "docker" "start" "-a" "e1fa91d3bb4b5c077a174df66a2b101c6bf4e62b94db4a9633303f1fa69a721d", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `vectors` is never used
[INFO] [stdout]  --> src/standard_collections.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn vectors(){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "e1fa91d3bb4b5c077a174df66a2b101c6bf4e62b94db4a9633303f1fa69a721d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1fa91d3bb4b5c077a174df66a2b101c6bf4e62b94db4a9633303f1fa69a721d", kill_on_drop: false }`
[INFO] [stdout] e1fa91d3bb4b5c077a174df66a2b101c6bf4e62b94db4a9633303f1fa69a721d