[INFO] fetching crate kg-tree 0.2.1...
[INFO] checking kg-tree-0.2.1 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate kg-tree 0.2.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate kg-tree 0.2.1 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kg-tree 0.2.1
[INFO] finished tweaking crates.io crate kg-tree 0.2.1
[INFO] tweaked toml for crates.io crate kg-tree 0.2.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b145ac92e1b6cc520344e0725c9486e48c7045cfb751e2c40c4be898f83d94c
[INFO] running `Command { std: "docker" "start" "-a" "5b145ac92e1b6cc520344e0725c9486e48c7045cfb751e2c40c4be898f83d94c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b145ac92e1b6cc520344e0725c9486e48c7045cfb751e2c40c4be898f83d94c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b145ac92e1b6cc520344e0725c9486e48c7045cfb751e2c40c4be898f83d94c", kill_on_drop: false }`
[INFO] [stdout] 5b145ac92e1b6cc520344e0725c9486e48c7045cfb751e2c40c4be898f83d94c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b395e2fc3f825388d54bf104d0aeb98fbd5b3a0eeafc8b75ccc25b32edb6066d
[INFO] running `Command { std: "docker" "start" "-a" "b395e2fc3f825388d54bf104d0aeb98fbd5b3a0eeafc8b75ccc25b32edb6066d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking lexical-core v0.7.6
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.4/src/lib.rs:91:42
[INFO] [stdout]    |
[INFO] [stdout] 91 | #![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] error: could not compile `lock_api` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b395e2fc3f825388d54bf104d0aeb98fbd5b3a0eeafc8b75ccc25b32edb6066d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b395e2fc3f825388d54bf104d0aeb98fbd5b3a0eeafc8b75ccc25b32edb6066d", kill_on_drop: false }`
[INFO] [stdout] b395e2fc3f825388d54bf104d0aeb98fbd5b3a0eeafc8b75ccc25b32edb6066d