[INFO] cloning repository https://github.com/mettke/rust_read_write_core_rfc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mettke/rust_read_write_core_rfc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmettke%2Frust_read_write_core_rfc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmettke%2Frust_read_write_core_rfc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8599ed3d8812608e6b0314017c77c3b8c997bf38
[INFO] testing mettke/rust_read_write_core_rfc 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%2Fmettke%2Frust_read_write_core_rfc" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mettke/rust_read_write_core_rfc 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/mettke/rust_read_write_core_rfc
[INFO] finished tweaking git repo https://github.com/mettke/rust_read_write_core_rfc
[INFO] tweaked toml for git repo https://github.com/mettke/rust_read_write_core_rfc written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mettke/rust_read_write_core_rfc 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] fe99469caf6083c6f232c374e2dace8d5b9f0c0903ac0ca748387d496250d24e
[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" "fe99469caf6083c6f232c374e2dace8d5b9f0c0903ac0ca748387d496250d24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe99469caf6083c6f232c374e2dace8d5b9f0c0903ac0ca748387d496250d24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe99469caf6083c6f232c374e2dace8d5b9f0c0903ac0ca748387d496250d24e", kill_on_drop: false }`
[INFO] [stdout] fe99469caf6083c6f232c374e2dace8d5b9f0c0903ac0ca748387d496250d24e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 15a7ef21c9c5c51d8a3e47c9784707601c07f9571e80fb5f4885d37d1f0b6400
[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" "15a7ef21c9c5c51d8a3e47c9784707601c07f9571e80fb5f4885d37d1f0b6400", kill_on_drop: false }`
[INFO] [stderr]    Compiling rw-poc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(read_initializer)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io_slice_advance)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib/std.rs:150:33
[INFO] [stdout]     |
[INFO] [stdout] 150 |         bufs = IoSlice::advance(bufs, 0);
[INFO] [stdout]     |                                 ^^^^ expected struct `IoSlice`, found slice
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut IoSlice<'_>`
[INFO] [stdout]                found mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib/std.rs:150:16
[INFO] [stdout]     |
[INFO] [stdout] 150 |         bufs = IoSlice::advance(bufs, 0);
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ expected mutable reference, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout]                        found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib/std.rs:156:38
[INFO] [stdout]     |
[INFO] [stdout] 156 |                     IoSlice::advance(bufs, n.get());
[INFO] [stdout]     |                                      ^^^^ expected struct `IoSlice`, found slice
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut IoSlice<'_>`
[INFO] [stdout]                found mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib/std.rs:160:38
[INFO] [stdout]     |
[INFO] [stdout] 160 |                     IoSlice::advance(bufs, n.get());
[INFO] [stdout]     |                                      ^^^^ expected struct `IoSlice`, found slice
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut IoSlice<'_>`
[INFO] [stdout]                found mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib/write.rs:36:33
[INFO] [stdout]    |
[INFO] [stdout] 36 |         bufs = IoSlice::advance(bufs, 0);
[INFO] [stdout]    |                                 ^^^^ expected struct `IoSlice`, found slice
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut IoSlice<'_>`
[INFO] [stdout]               found mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib/write.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 36 |         bufs = IoSlice::advance(bufs, 0);
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^ expected mutable reference, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout]                       found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib/write.rs:45:50
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 Ok(n) => bufs = IoSlice::advance(bufs, n),
[INFO] [stdout]    |                                                  ^^^^ expected struct `IoSlice`, found slice
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut IoSlice<'_>`
[INFO] [stdout]               found mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib/write.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 Ok(n) => bufs = IoSlice::advance(bufs, n),
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^ expected mutable reference, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut [IoSlice<'_>]`
[INFO] [stdout]                       found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rw-poc` due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "15a7ef21c9c5c51d8a3e47c9784707601c07f9571e80fb5f4885d37d1f0b6400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15a7ef21c9c5c51d8a3e47c9784707601c07f9571e80fb5f4885d37d1f0b6400", kill_on_drop: false }`
[INFO] [stdout] 15a7ef21c9c5c51d8a3e47c9784707601c07f9571e80fb5f4885d37d1f0b6400
