[INFO] cloning repository https://github.com/LiamOW/RustyCalculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LiamOW/RustyCalculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamOW%2FRustyCalculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamOW%2FRustyCalculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 161648464c208333d2d331363f63468c27cbee47
[INFO] checking LiamOW/RustyCalculator against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamOW%2FRustyCalculator" "/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/LiamOW/RustyCalculator on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LiamOW/RustyCalculator
[INFO] removed path dependency calculator from git repo https://github.com/LiamOW/RustyCalculator
[INFO] finished tweaking git repo https://github.com/LiamOW/RustyCalculator
[INFO] tweaked toml for git repo https://github.com/LiamOW/RustyCalculator written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/LiamOW/RustyCalculator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (calculator) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (calculator) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rocket_contrib v0.4.6
[INFO] [stderr]   Downloaded inotify-sys v0.1.4
[INFO] [stderr]   Downloaded rocket_cors v0.5.2
[INFO] [stderr]   Downloaded unicase_serde v0.1.0
[INFO] [stderr]   Downloaded handlebars v1.1.0
[INFO] [stderr]   Downloaded filetime v0.2.13
[INFO] [stderr]   Downloaded utf8parse v0.1.1
[INFO] [stderr]   Downloaded rustyline v5.0.6
[INFO] [stderr]   Downloaded pest_meta v2.1.3
[INFO] [stderr]   Downloaded pest_generator v2.1.3
[INFO] [stderr]   Downloaded calculator v0.0.1
[INFO] [stderr]   Downloaded vec_map v0.0.1
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", 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] a5c27367a17209504251118a6a675c06234dedc95910c635e92459e87bc0f9e4
[INFO] running `Command { std: "docker" "start" "-a" "a5c27367a17209504251118a6a675c06234dedc95910c635e92459e87bc0f9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5c27367a17209504251118a6a675c06234dedc95910c635e92459e87bc0f9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c27367a17209504251118a6a675c06234dedc95910c635e92459e87bc0f9e4", kill_on_drop: false }`
[INFO] [stdout] a5c27367a17209504251118a6a675c06234dedc95910c635e92459e87bc0f9e4
[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=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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80bcdcd78a5f5c98585c4fd591f37742f2a7cbeb7e3091d8118b782d355aebfb
[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" "80bcdcd78a5f5c98585c4fd591f37742f2a7cbeb7e3091d8118b782d355aebfb", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (calculator) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking unic-char-range v0.7.0
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking unic-common v0.7.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking vec_map v0.0.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking unic-ucd-version v0.7.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]     Checking unic-char-property v0.7.0
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking calculator v0.0.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking inotify-sys v0.1.4
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/calculator-0.0.1/src/expr.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(collections)]
[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 E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `calculator`
[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" "80bcdcd78a5f5c98585c4fd591f37742f2a7cbeb7e3091d8118b782d355aebfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80bcdcd78a5f5c98585c4fd591f37742f2a7cbeb7e3091d8118b782d355aebfb", kill_on_drop: false }`
[INFO] [stdout] 80bcdcd78a5f5c98585c4fd591f37742f2a7cbeb7e3091d8118b782d355aebfb