[INFO] fetching crate heph 0.3.1...
[INFO] testing heph-0.3.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate heph 0.3.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate heph 0.3.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate heph 0.3.1
[INFO] finished tweaking crates.io crate heph 0.3.1
[INFO] tweaked toml for crates.io crate heph 0.3.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate heph 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log-panics v2.0.0
[INFO] [stderr]   Downloaded sval v1.0.0-alpha.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.28
[INFO] [stderr]   Downloaded addr2line v0.16.0
[INFO] [stderr]   Downloaded cc v1.0.69
[INFO] [stderr]   Downloaded bitflags v1.3.1
[INFO] [stderr]   Downloaded mio-signals v0.1.5
[INFO] [stderr]   Downloaded heph-inbox v0.2.2
[INFO] [stderr]   Downloaded std-logger v0.4.1
[INFO] [stderr]   Downloaded object v0.26.0
[INFO] [stderr]   Downloaded gimli v0.25.0
[INFO] [stderr]   Downloaded libc v0.2.99
[INFO] [stderr]   Downloaded rustc-demangle v0.1.20
[INFO] [stderr]   Downloaded syn v1.0.74
[INFO] [stderr]   Downloaded backtrace v0.3.61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1824b5a8de74c06204a33a886a024a6818e214b759d48da0726870813b6d3ab
[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" "a1824b5a8de74c06204a33a886a024a6818e214b759d48da0726870813b6d3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1824b5a8de74c06204a33a886a024a6818e214b759d48da0726870813b6d3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1824b5a8de74c06204a33a886a024a6818e214b759d48da0726870813b6d3ab", kill_on_drop: false }`
[INFO] [stdout] a1824b5a8de74c06204a33a886a024a6818e214b759d48da0726870813b6d3ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33cb1df06916302b09e7049c521dbc1a971fb01d5ded41c1d55434506dff3180
[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" "33cb1df06916302b09e7049c521dbc1a971fb01d5ded41c1d55434506dff3180", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling heph-inbox v0.2.2
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling mio-signals v0.1.5
[INFO] [stderr]    Compiling heph v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find function `available_concurrency` in module `thread`
[INFO] [stdout]   --> src/rt/setup.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let n = match thread::available_concurrency() {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^ not found in `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Missing required bounds on Bufs
[INFO] [stdout]    --> src/net/mod.rs:419:5
[INFO] [stdout]     |
[INFO] [stdout] 419 |     type Bufs<'b>: AsMut<[MaybeUninitSlice<'b>]>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 help: add the required where clauses: `where Self: 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `heph` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "33cb1df06916302b09e7049c521dbc1a971fb01d5ded41c1d55434506dff3180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33cb1df06916302b09e7049c521dbc1a971fb01d5ded41c1d55434506dff3180", kill_on_drop: false }`
[INFO] [stdout] 33cb1df06916302b09e7049c521dbc1a971fb01d5ded41c1d55434506dff3180