[INFO] cloning repository https://github.com/englishm/adder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/englishm/adder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenglishm%2Fadder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenglishm%2Fadder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8ae4c8e6eea2e7dc57b87b3e5143007bdf2fc9c
[INFO] testing englishm/adder against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenglishm%2Fadder" "/workspace/builds/worker-116/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-116/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/englishm/adder on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/englishm/adder
[INFO] finished tweaking git repo https://github.com/englishm/adder
[INFO] tweaked toml for git repo https://github.com/englishm/adder written to /workspace/builds/worker-116/source/Cargo.toml
[INFO] crate git repo https://github.com/englishm/adder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3327b0059f42c2e28991fa5723eca36cc7a34c8d72a67b54040538f11c1b8b4a
[INFO] running `Command { std: "docker" "start" "-a" "3327b0059f42c2e28991fa5723eca36cc7a34c8d72a67b54040538f11c1b8b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3327b0059f42c2e28991fa5723eca36cc7a34c8d72a67b54040538f11c1b8b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3327b0059f42c2e28991fa5723eca36cc7a34c8d72a67b54040538f11c1b8b4a", kill_on_drop: false }`
[INFO] [stdout] 3327b0059f42c2e28991fa5723eca36cc7a34c8d72a67b54040538f11c1b8b4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4725361a304b1dc5fd5de338878fd60e0bb2a58a60625581f1157fed0ebaedd
[INFO] running `Command { std: "docker" "start" "-a" "e4725361a304b1dc5fd5de338878fd60e0bb2a58a60625581f1157fed0ebaedd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling adder v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'test'
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | extern crate test;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stdout]    = help: add `#![feature(test)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `adder` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e4725361a304b1dc5fd5de338878fd60e0bb2a58a60625581f1157fed0ebaedd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4725361a304b1dc5fd5de338878fd60e0bb2a58a60625581f1157fed0ebaedd", kill_on_drop: false }`
[INFO] [stdout] e4725361a304b1dc5fd5de338878fd60e0bb2a58a60625581f1157fed0ebaedd