[INFO] fetching crate kunai 0.4.0...
[INFO] checking kunai-0.4.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate kunai 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate kunai 0.4.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kunai 0.4.0
[INFO] finished tweaking crates.io crate kunai 0.4.0
[INFO] tweaked toml for crates.io crate kunai 0.4.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate kunai 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b523e23800c44c75c78ff83fcb0d2d987fbfd9b52956af3819604a601e6e8fb7
[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" "b523e23800c44c75c78ff83fcb0d2d987fbfd9b52956af3819604a601e6e8fb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b523e23800c44c75c78ff83fcb0d2d987fbfd9b52956af3819604a601e6e8fb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b523e23800c44c75c78ff83fcb0d2d987fbfd9b52956af3819604a601e6e8fb7", kill_on_drop: false }`
[INFO] [stdout] b523e23800c44c75c78ff83fcb0d2d987fbfd9b52956af3819604a601e6e8fb7
[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=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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--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] b095f6cd5a401d2cb26578af9526db32fa6d3a0dbdd6a52025f4257e636c65e9
[INFO] running `Command { std: "docker" "start" "-a" "b095f6cd5a401d2cb26578af9526db32fa6d3a0dbdd6a52025f4257e636c65e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking rustc-ap-graphviz v610.0.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling rustc-ap-rustc_target v610.0.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling rustc-ap-syntax v610.0.0
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling rustfmt-nightly v1.4.11
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking rustc-workspace-hack v1.0.0
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking bytesize v1.0.0
[INFO] [stderr]     Checking shell-escape v0.1.4
[INFO] [stderr]     Checking home v0.5.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking ego-tree v0.6.2
[INFO] [stderr]     Checking opener v0.4.1
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking hex v0.4.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking lock_api v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.2/src/lib.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                          ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lock_api`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b095f6cd5a401d2cb26578af9526db32fa6d3a0dbdd6a52025f4257e636c65e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b095f6cd5a401d2cb26578af9526db32fa6d3a0dbdd6a52025f4257e636c65e9", kill_on_drop: false }`
[INFO] [stdout] b095f6cd5a401d2cb26578af9526db32fa6d3a0dbdd6a52025f4257e636c65e9