[INFO] fetching crate tryfromfail 0.1.0...
[INFO] checking tryfromfail-0.1.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate tryfromfail 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tryfromfail 0.1.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tryfromfail 0.1.0
[INFO] finished tweaking crates.io crate tryfromfail 0.1.0
[INFO] tweaked toml for crates.io crate tryfromfail 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2a25d593e93dedf656d561020c82ee410f2150019ac86fe4a579e1a633fadee
[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" "e2a25d593e93dedf656d561020c82ee410f2150019ac86fe4a579e1a633fadee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2a25d593e93dedf656d561020c82ee410f2150019ac86fe4a579e1a633fadee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a25d593e93dedf656d561020c82ee410f2150019ac86fe4a579e1a633fadee", kill_on_drop: false }`
[INFO] [stdout] e2a25d593e93dedf656d561020c82ee410f2150019ac86fe4a579e1a633fadee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 818cb7b36e3b2cc5d667763edeebdc6aeca2241b8a406d27e9289c87611881d4
[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" "818cb7b36e3b2cc5d667763edeebdc6aeca2241b8a406d27e9289c87611881d4", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking quote v0.5.2
[INFO] [stderr]     Checking syn v0.13.11
[INFO] [stderr]     Checking tryfromfail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0659]: `FailingTryFrom` is ambiguous (derive helper attribute vs any other name)
[INFO] [stdout]  --> tests/test.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[FailingTryFrom(OtherType, AnotherType)]
[INFO] [stdout]   |   ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout] note: `FailingTryFrom` could refer to the derive helper attribute defined here
[INFO] [stdout]  --> tests/test.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, PartialEq, FailingTryFrom)]
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout] note: `FailingTryFrom` could also refer to the derive macro imported here
[INFO] [stdout]  --> tests/test.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[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 E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tryfromfail`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "818cb7b36e3b2cc5d667763edeebdc6aeca2241b8a406d27e9289c87611881d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "818cb7b36e3b2cc5d667763edeebdc6aeca2241b8a406d27e9289c87611881d4", kill_on_drop: false }`
[INFO] [stdout] 818cb7b36e3b2cc5d667763edeebdc6aeca2241b8a406d27e9289c87611881d4