[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] building mverleg/playground_alloc against master#70591dc15db32941fe3595fdbf98e58d6975f95e for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mverleg/playground_alloc on toolchain 70591dc15db32941fe3595fdbf98e58d6975f95e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "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-6-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] building mverleg/playground_alloc against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mverleg/playground_alloc on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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-6-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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
[ERROR] error running command: no output for 300 seconds
[INFO] building mverleg/playground_alloc against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mverleg/playground_alloc on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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-6-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ustr v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c60996f7347a66e28f0517516d773b3e6f87b8b227c63e1f5a819fdee2332d2f
[INFO] running `Command { std: "docker" "start" "-a" "c60996f7347a66e28f0517516d773b3e6f87b8b227c63e1f5a819fdee2332d2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c60996f7347a66e28f0517516d773b3e6f87b8b227c63e1f5a819fdee2332d2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c60996f7347a66e28f0517516d773b3e6f87b8b227c63e1f5a819fdee2332d2f", kill_on_drop: false }`
[INFO] [stdout] c60996f7347a66e28f0517516d773b3e6f87b8b227c63e1f5a819fdee2332d2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dae62ccc3efce16fb1e70719a0bbb1655b4413ca9535ce4609c8c43cb950265a
[INFO] running `Command { std: "docker" "start" "-a" "dae62ccc3efce16fb1e70719a0bbb1655b4413ca9535ce4609c8c43cb950265a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling smallvec v1.4.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling scopeguard v1.1.0
[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 const-random-macro v0.1.8
[INFO] [stderr]    Compiling parking_lot v0.10.2
[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] 26 |     let mut f1 = File {
[INFO] [stdout]    |         ------ binding `f1` declared here
[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]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[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` (bin "bump_aloc") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "dae62ccc3efce16fb1e70719a0bbb1655b4413ca9535ce4609c8c43cb950265a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dae62ccc3efce16fb1e70719a0bbb1655b4413ca9535ce4609c8c43cb950265a", kill_on_drop: false }`
[INFO] [stdout] dae62ccc3efce16fb1e70719a0bbb1655b4413ca9535ce4609c8c43cb950265a