[INFO] fetching crate clint 0.2.1...
[INFO] testing clint-0.2.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate clint 0.2.1 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate clint 0.2.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate clint 0.2.1
[INFO] finished tweaking crates.io crate clint 0.2.1
[INFO] tweaked toml for crates.io crate clint 0.2.1 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate clint 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.7.3
[INFO] [stderr]   Downloaded libc v0.2.54
[INFO] [stderr]   Downloaded generic-array v0.12.0
[INFO] [stderr]   Downloaded serde v1.0.90
[INFO] [stderr]   Downloaded filetime v0.2.5
[INFO] [stderr]   Downloaded cc v1.0.36
[INFO] [stderr]   Downloaded rustfix v0.4.5
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded serde_derive v1.0.90
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded regex v1.1.6
[INFO] [stderr]   Downloaded as-slice v0.1.0
[INFO] [stderr]   Downloaded aligned v0.3.1
[INFO] [stderr]   Downloaded bare-metal v0.2.4
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] [stderr]   Downloaded regex-syntax v0.6.6
[INFO] [stderr]   Downloaded vcell v0.1.0
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] [stderr]   Downloaded cfg-if v0.1.7
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.5
[INFO] [stderr]   Downloaded socket2 v0.3.8
[INFO] [stderr]   Downloaded compiletest_rs v0.3.22
[INFO] [stderr]   Downloaded cortex-m v0.6.0
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.8
[INFO] [stderr]   Downloaded backtrace v0.3.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6510bffe2c52472381b068c280a37af2579968dc809190c0bff4eeaa0ddab88
[INFO] running `Command { std: "docker" "start" "-a" "e6510bffe2c52472381b068c280a37af2579968dc809190c0bff4eeaa0ddab88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6510bffe2c52472381b068c280a37af2579968dc809190c0bff4eeaa0ddab88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6510bffe2c52472381b068c280a37af2579968dc809190c0bff4eeaa0ddab88", kill_on_drop: false }`
[INFO] [stdout] e6510bffe2c52472381b068c280a37af2579968dc809190c0bff4eeaa0ddab88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 552b2e0b14323c01c946f93693c37f1729d519f36a4fabc61774e9934c6eab80
[INFO] running `Command { std: "docker" "start" "-a" "552b2e0b14323c01c946f93693c37f1729d519f36a4fabc61774e9934c6eab80", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling clint v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![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] [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 `clint` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "552b2e0b14323c01c946f93693c37f1729d519f36a4fabc61774e9934c6eab80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "552b2e0b14323c01c946f93693c37f1729d519f36a4fabc61774e9934c6eab80", kill_on_drop: false }`
[INFO] [stdout] 552b2e0b14323c01c946f93693c37f1729d519f36a4fabc61774e9934c6eab80