[INFO] cloning repository https://github.com/MeetMon/MeetMon-BackEnd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MeetMon/MeetMon-BackEnd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMeetMon%2FMeetMon-BackEnd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMeetMon%2FMeetMon-BackEnd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 754b3734cc852cf50dc4e81a604ff6baf60a0660
[INFO] testing MeetMon/MeetMon-BackEnd against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMeetMon%2FMeetMon-BackEnd" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MeetMon/MeetMon-BackEnd on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MeetMon/MeetMon-BackEnd
[INFO] finished tweaking git repo https://github.com/MeetMon/MeetMon-BackEnd
[INFO] tweaked toml for git repo https://github.com/MeetMon/MeetMon-BackEnd written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/MeetMon/MeetMon-BackEnd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `http://github.com/SergioBenitez/Pear`
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/cookie-rs`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.70
[INFO] [stderr]   Downloaded itoa v0.4.2
[INFO] [stderr]   Downloaded serde_json v1.0.24
[INFO] [stderr]   Downloaded smallvec v0.6.3
[INFO] [stderr]   Downloaded isatty v0.1.8
[INFO] [stderr]   Downloaded chrono v0.4.5
[INFO] [stderr]   Downloaded aho-corasick v0.6.6
[INFO] [stderr]   Downloaded scan_fmt v0.1.3
[INFO] [stderr]   Downloaded separator v0.3.1
[INFO] [stderr]   Downloaded try_from v0.2.2
[INFO] [stderr]   Downloaded base64 v0.9.2
[INFO] [stderr]   Downloaded cfg-if v0.1.4
[INFO] [stderr]   Downloaded md5 v0.3.7
[INFO] [stderr]   Downloaded textnonce v0.6.4
[INFO] [stderr]   Downloaded proc-macro2 v0.4.9
[INFO] [stderr]   Downloaded bufstream v0.1.3
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded mongodb v0.3.10
[INFO] [stderr]   Downloaded serde v1.0.70
[INFO] [stderr]   Downloaded lazy_static v1.0.2
[INFO] [stderr]   Downloaded quote v0.6.4
[INFO] [stderr]   Downloaded syn v0.14.6
[INFO] [stderr]   Downloaded ring v0.13.2
[INFO] [stderr]   Downloaded matches v0.1.7
[INFO] [stderr]   Downloaded bson v0.12.3
[INFO] [stderr]   Downloaded indexmap v1.0.1
[INFO] [stderr]   Downloaded semver v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe59a679ad6e62381d27d1d8dcc68908f379e47b34edeb4cd0b8214e31762e2d
[INFO] running `Command { std: "docker" "start" "-a" "fe59a679ad6e62381d27d1d8dcc68908f379e47b34edeb4cd0b8214e31762e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe59a679ad6e62381d27d1d8dcc68908f379e47b34edeb4cd0b8214e31762e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe59a679ad6e62381d27d1d8dcc68908f379e47b34edeb4cd0b8214e31762e2d", kill_on_drop: false }`
[INFO] [stdout] fe59a679ad6e62381d27d1d8dcc68908f379e47b34edeb4cd0b8214e31762e2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e50e98bf397a3bf2afeb526e2f3ffc9a1bece696a52a7270533433a03dc99827
[INFO] running `Command { std: "docker" "start" "-a" "e50e98bf397a3bf2afeb526e2f3ffc9a1bece696a52a7270533433a03dc99827", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling byteorder v1.2.4
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling untrusted v0.6.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling try_from v0.2.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling md5 v0.3.7
[INFO] [stderr]    Compiling separator v0.3.1
[INFO] [stderr]    Compiling data-encoding v2.1.1
[INFO] [stderr]    Compiling bufstream v0.1.3
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/lib.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 | #![cfg_attr(feature = "nightly", feature(proc_macro_raw_ident, proc_macro_span))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` due to 3 previous errors
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_def_site'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/unstable.rs:347:27
[INFO] [stdout]     |
[INFO] [stdout] 347 |             Span::Nightly(proc_macro::Span::def_site())
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54724 <https://github.com/rust-lang/rust/issues/54724> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e50e98bf397a3bf2afeb526e2f3ffc9a1bece696a52a7270533433a03dc99827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50e98bf397a3bf2afeb526e2f3ffc9a1bece696a52a7270533433a03dc99827", kill_on_drop: false }`
[INFO] [stdout] e50e98bf397a3bf2afeb526e2f3ffc9a1bece696a52a7270533433a03dc99827
