[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] checking mverleg/playground_alloc against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fplayground_alloc" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mverleg/playground_alloc on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e4fad384c6591d45f56f1c607040bc382861fc0ceb485e84fb0925c321022ae6
[INFO] running `Command { std: "docker" "start" "-a" "e4fad384c6591d45f56f1c607040bc382861fc0ceb485e84fb0925c321022ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4fad384c6591d45f56f1c607040bc382861fc0ceb485e84fb0925c321022ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4fad384c6591d45f56f1c607040bc382861fc0ceb485e84fb0925c321022ae6", kill_on_drop: false }`
[INFO] [stdout] e4fad384c6591d45f56f1c607040bc382861fc0ceb485e84fb0925c321022ae6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f87abce38d58ec3b044faf737a934fa943506f3e26ff63f9aadb19dd4d0ce998
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f87abce38d58ec3b044faf737a934fa943506f3e26ff63f9aadb19dd4d0ce998", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking bumpalo v3.4.0
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking ustr v0.7.0
[INFO] [stderr]     Checking bump_aloc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `bump_aloc`.
[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] [stderr] 
[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] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] [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: build failed
[INFO] running `Command { std: "docker" "inspect" "f87abce38d58ec3b044faf737a934fa943506f3e26ff63f9aadb19dd4d0ce998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f87abce38d58ec3b044faf737a934fa943506f3e26ff63f9aadb19dd4d0ce998", kill_on_drop: false }`
[INFO] [stdout] f87abce38d58ec3b044faf737a934fa943506f3e26ff63f9aadb19dd4d0ce998
