[INFO] cloning repository https://github.com/adam-r-kowalski/ra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adam-r-kowalski/ra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadam-r-kowalski%2Fra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadam-r-kowalski%2Fra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a521d8184f4a178dd0704712d10821864382f30
[INFO] checking adam-r-kowalski/ra against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadam-r-kowalski%2Fra" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adam-r-kowalski/ra on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/adam-r-kowalski/ra
[INFO] finished tweaking git repo https://github.com/adam-r-kowalski/ra
[INFO] tweaked toml for git repo https://github.com/adam-r-kowalski/ra written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/adam-r-kowalski/ra already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 0b0d4c5d187d848dd1907b7c08aa5144b76bf1f5306c2963f5ed288432d310a8
[INFO] running `Command { std: "docker" "start" "-a" "0b0d4c5d187d848dd1907b7c08aa5144b76bf1f5306c2963f5ed288432d310a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b0d4c5d187d848dd1907b7c08aa5144b76bf1f5306c2963f5ed288432d310a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b0d4c5d187d848dd1907b7c08aa5144b76bf1f5306c2963f5ed288432d310a8", kill_on_drop: false }`
[INFO] [stdout] 0b0d4c5d187d848dd1907b7c08aa5144b76bf1f5306c2963f5ed288432d310a8
[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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17fc9ff28f50261ed5b66fcdea70e9762026cf4cd794526d3e38b36c7f9dc78c
[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" "17fc9ff28f50261ed5b66fcdea70e9762026cf4cd794526d3e38b36c7f9dc78c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling rkyv v0.6.7
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.74.0
[INFO] [stderr]    Compiling cranelift-entity v0.74.0
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v2.0.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling wasmer-vm v2.0.0
[INFO] [stderr]     Checking tracing-core v0.1.19
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking memmap2 v0.2.3
[INFO] [stderr]     Checking which v4.2.2
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking wast v37.0.0
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.74.0
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking cranelift-bforest v0.74.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking wat v1.0.39
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling loupe-derive v0.1.3
[INFO] [stderr]    Compiling rkyv_derive v0.6.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling wasmer-derive v2.0.0
[INFO] [stderr]    Compiling darling_macro v0.13.0
[INFO] [stderr]    Compiling cranelift-codegen v0.74.0
[INFO] [stderr]     Checking ptr_meta v0.1.4
[INFO] [stderr]    Compiling darling v0.13.0
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]    Compiling enumset_derive v0.5.5
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking enumset v1.0.7
[INFO] [stderr]     Checking indexmap v1.7.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking loupe v0.1.3
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking wasmer-types v2.0.0
[INFO] [stderr]     Checking wasmer-compiler v2.0.0
[INFO] [stderr]     Checking wasmer-engine v2.0.0
[INFO] [stderr]     Checking wasmer-object v2.0.0
[INFO] [stderr]     Checking wasmer-engine-dylib v2.0.0
[INFO] [stderr]     Checking wasmer-engine-universal v2.0.0
[INFO] [stderr]     Checking cranelift-frontend v0.74.0
[INFO] [stderr]     Checking wasmer v2.0.0
[INFO] [stderr]     Checking mongoose v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_try_insert)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_try_insert)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mongoose` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "17fc9ff28f50261ed5b66fcdea70e9762026cf4cd794526d3e38b36c7f9dc78c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17fc9ff28f50261ed5b66fcdea70e9762026cf4cd794526d3e38b36c7f9dc78c", kill_on_drop: false }`
[INFO] [stdout] 17fc9ff28f50261ed5b66fcdea70e9762026cf4cd794526d3e38b36c7f9dc78c
