[INFO] cloning repository https://github.com/mverleg/playground_alloc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mverleg/playground_alloc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8094e5fdd8ebcfc7adb392228664aa6ff5e6cbb9
[INFO] testing mverleg/playground_alloc against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc" "/workspace/builds/worker-42/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-42/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mverleg/playground_alloc on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mverleg/playground_alloc
[INFO] finished tweaking git repo https://github.com/mverleg/playground_alloc
[INFO] tweaked toml for git repo https://github.com/mverleg/playground_alloc written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate git repo https://github.com/mverleg/playground_alloc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ustr v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9889adcb993cf7783ab8e7663b9cc25162c252f066eb7e0f00357b2fb258c8b
[INFO] running `Command { std: "docker" "start" "-a" "a9889adcb993cf7783ab8e7663b9cc25162c252f066eb7e0f00357b2fb258c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9889adcb993cf7783ab8e7663b9cc25162c252f066eb7e0f00357b2fb258c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9889adcb993cf7783ab8e7663b9cc25162c252f066eb7e0f00357b2fb258c8b", kill_on_drop: false }`
[INFO] [stdout] a9889adcb993cf7783ab8e7663b9cc25162c252f066eb7e0f00357b2fb258c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d9297e60d72b01101ea4b21f4f25faa02627db1671b2ea6a9f4795c671918e0
[INFO] running `Command { std: "docker" "start" "-a" "0d9297e60d72b01101ea4b21f4f25faa02627db1671b2ea6a9f4795c671918e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.4.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling ustr v0.7.0
[INFO] [stderr]    Compiling bump_aloc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0597]: `f1.elements` does not live long enough
[INFO] [stdout]   --> src/main.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |         elem: f1.elements.get_mut(0).unwrap(),
[INFO] [stdout]    |               ^^^^^^^^^^^ borrowed value does not live long enough
[INFO] [stdout] ...
[INFO] [stdout] 40 | }
[INFO] [stdout]    | -
[INFO] [stdout]    | |
[INFO] [stdout]    | `f1.elements` dropped here while still borrowed
[INFO] [stdout]    | borrow might be used here, when `f1` is dropped and runs the destructor for type `File<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `f1` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> src/main.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 35 |         elem: f1.elements.get_mut(0).unwrap(),
[INFO] [stdout]    |               ----------- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 39 |     println!("{:?}", f1);
[INFO] [stdout]    |                      ^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      immutable borrow occurs here
[INFO] [stdout]    |                      mutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0502, E0597.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bump_aloc` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "0d9297e60d72b01101ea4b21f4f25faa02627db1671b2ea6a9f4795c671918e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d9297e60d72b01101ea4b21f4f25faa02627db1671b2ea6a9f4795c671918e0", kill_on_drop: false }`
[INFO] [stdout] 0d9297e60d72b01101ea4b21f4f25faa02627db1671b2ea6a9f4795c671918e0
