[INFO] cloning repository https://github.com/kazimuth/transgress-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kazimuth/transgress-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazimuth%2Ftransgress-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazimuth%2Ftransgress-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 739b844823425e929c181bcfff5c82631d8f1a19
[INFO] testing kazimuth/transgress-rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazimuth%2Ftransgress-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kazimuth/transgress-rs on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kazimuth/transgress-rs
[INFO] finished tweaking git repo https://github.com/kazimuth/transgress-rs
[INFO] tweaked toml for git repo https://github.com/kazimuth/transgress-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kazimuth/transgress-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang-nursery/lazy-static.rs`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo_metadata v0.8.2
[INFO] [stderr]   Downloaded ahash v0.3.2
[INFO] [stderr]   Downloaded smol_str v0.1.15
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.1
[INFO] [stderr]   Downloaded sharded-slab v0.0.8
[INFO] [stderr]   Downloaded tracing-serde v0.1.0
[INFO] [stderr]   Downloaded dashmap v3.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cd2ffd6a5662c8bbfd8476ab9c1718726bf8a582e03c65b65faaf9597641856
[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" "3cd2ffd6a5662c8bbfd8476ab9c1718726bf8a582e03c65b65faaf9597641856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cd2ffd6a5662c8bbfd8476ab9c1718726bf8a582e03c65b65faaf9597641856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd2ffd6a5662c8bbfd8476ab9c1718726bf8a582e03c65b65faaf9597641856", kill_on_drop: false }`
[INFO] [stdout] 3cd2ffd6a5662c8bbfd8476ab9c1718726bf8a582e03c65b65faaf9597641856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", 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] c0afe66da2c3b675d01bd9a700e32df7739867bd1b05b685577d299d0499d4ad
[INFO] running `Command { std: "docker" "start" "-a" "c0afe66da2c3b675d01bd9a700e32df7739867bd1b05b685577d299d0499d4ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling array-macro v1.0.4
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling lazy_static v1.4.0 (https://github.com/rust-lang-nursery/lazy-static.rs?branch=master#746a0f02)
[INFO] [stderr]    Compiling tendon v0.0.0 (/opt/rustwide/workdir/tendon)
[INFO] [stderr]    Compiling tracing-core v0.1.9
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling sharded-slab v0.0.8
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling test-crate v0.1.0 (/opt/rustwide/workdir/test-crate)
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]    Compiling enum-map-derive v0.4.3
[INFO] [stderr]    Compiling enum-map v0.6.2
[INFO] [stderr]    Compiling tracing v0.1.12
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling tracing-serde v0.1.0
[INFO] [stderr]    Compiling smol_str v0.1.15
[INFO] [stderr]    Compiling lock_api v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling cargo_metadata v0.8.2
[INFO] [stderr]    Compiling tracing-subscriber v0.2.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling spoor v0.1.0 (/opt/rustwide/workdir/spoor)
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.5.0/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     feature(
[INFO] [stdout] 16 | |         alloc_layout_extra,
[INFO] [stdout] 17 | |         allocator_api,
[INFO] [stdout] 18 | |         ptr_offset_from,
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         dropck_eyepatch
[INFO] [stdout] 22 | |     )
[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] [stderr] error: could not compile `hashbrown` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c0afe66da2c3b675d01bd9a700e32df7739867bd1b05b685577d299d0499d4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0afe66da2c3b675d01bd9a700e32df7739867bd1b05b685577d299d0499d4ad", kill_on_drop: false }`
[INFO] [stdout] c0afe66da2c3b675d01bd9a700e32df7739867bd1b05b685577d299d0499d4ad