[INFO] fetching crate calculator 0.0.1...
[INFO] testing calculator-0.0.1 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate calculator 0.0.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate calculator 0.0.1 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate calculator 0.0.1
[INFO] finished tweaking crates.io crate calculator 0.0.1
[INFO] tweaked toml for crates.io crate calculator 0.0.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vec_map v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3bf5fe74cfe9365517d9b25c761ced1ef0cb0dcdd4a048e87a20206ec37fbcf4
[INFO] running `Command { std: "docker" "start" "-a" "3bf5fe74cfe9365517d9b25c761ced1ef0cb0dcdd4a048e87a20206ec37fbcf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bf5fe74cfe9365517d9b25c761ced1ef0cb0dcdd4a048e87a20206ec37fbcf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bf5fe74cfe9365517d9b25c761ced1ef0cb0dcdd4a048e87a20206ec37fbcf4", kill_on_drop: false }`
[INFO] [stdout] 3bf5fe74cfe9365517d9b25c761ced1ef0cb0dcdd4a048e87a20206ec37fbcf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6d1bd70c5e4802af9524d504853236bc76a4d803dd894326468c3951cef3e96
[INFO] running `Command { std: "docker" "start" "-a" "e6d1bd70c5e4802af9524d504853236bc76a4d803dd894326468c3951cef3e96", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling vec_map v0.0.1
[INFO] [stderr]    Compiling calculator v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> src/expr.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(collections)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[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 E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `calculator` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e6d1bd70c5e4802af9524d504853236bc76a4d803dd894326468c3951cef3e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d1bd70c5e4802af9524d504853236bc76a4d803dd894326468c3951cef3e96", kill_on_drop: false }`
[INFO] [stdout] e6d1bd70c5e4802af9524d504853236bc76a4d803dd894326468c3951cef3e96