[INFO] cloning repository https://github.com/Medowhill/extract-dependency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Medowhill/extract-dependency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedowhill%2Fextract-dependency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedowhill%2Fextract-dependency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb200df3e0ce54e18c910dcb37e9c7d56357e5bf
[INFO] testing Medowhill/extract-dependency against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedowhill%2Fextract-dependency" "/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/Medowhill/extract-dependency 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] removed /workspace/builds/worker-6/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Medowhill/extract-dependency
[INFO] finished tweaking git repo https://github.com/Medowhill/extract-dependency
[INFO] tweaked toml for git repo https://github.com/Medowhill/extract-dependency written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Medowhill/extract-dependency 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]  Downloading crates ...
[INFO] [stderr]   Downloaded termize v0.1.1
[INFO] [stderr]   Downloaded annotate-snippets v0.8.0
[INFO] [stderr]   Downloaded stacker v0.1.13
[INFO] [stderr]   Downloaded perf-event-open-sys v1.0.1
[INFO] [stderr]   Downloaded memmap2 v0.2.2
[INFO] [stderr]   Downloaded rustc-rayon v0.3.1
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.1
[INFO] [stderr]   Downloaded redox_syscall v0.2.7
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v716.0.0
[INFO] [stderr]   Downloaded measureme v9.1.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v716.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v716.0.0
[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] 6025ed47d2ff5ab41e1c9ab350af11a729a4ea5f9b553f325cc119db1e155b4b
[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" "6025ed47d2ff5ab41e1c9ab350af11a729a4ea5f9b553f325cc119db1e155b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6025ed47d2ff5ab41e1c9ab350af11a729a4ea5f9b553f325cc119db1e155b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6025ed47d2ff5ab41e1c9ab350af11a729a4ea5f9b553f325cc119db1e155b4b", kill_on_drop: false }`
[INFO] [stdout] 6025ed47d2ff5ab41e1c9ab350af11a729a4ea5f9b553f325cc119db1e155b4b
[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] 899472fce2433f86553cf1c7bf42edd26480d473b0ccb3c7621c6a8a8fcaab99
[INFO] running `Command { std: "docker" "start" "-a" "899472fce2433f86553cf1c7bf42edd26480d473b0ccb3c7621c6a8a8fcaab99", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling rustc-ap-rustc_graphviz v716.0.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling annotate-snippets v0.8.0
[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/smallvec-1.6.1/src/lib.rs:76:37
[INFO] [stdout]    |
[INFO] [stdout] 76 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc-ap-rustc_fs_util v716.0.0
[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/rustc-ap-rustc_graphviz-716.0.0/src/lib.rs:278:1
[INFO] [stdout]     |
[INFO] [stdout] 278 | #![feature(nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling strsim v0.10.0
[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 `rustc-ap-rustc_graphviz` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "899472fce2433f86553cf1c7bf42edd26480d473b0ccb3c7621c6a8a8fcaab99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "899472fce2433f86553cf1c7bf42edd26480d473b0ccb3c7621c6a8a8fcaab99", kill_on_drop: false }`
[INFO] [stdout] 899472fce2433f86553cf1c7bf42edd26480d473b0ccb3c7621c6a8a8fcaab99