[INFO] fetching crate from_file 0.1.3...
[INFO] checking from_file-0.1.3 against try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[INFO] extracting crate from_file 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate from_file 0.1.3 on toolchain 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_file 0.1.3
[INFO] finished tweaking crates.io crate from_file 0.1.3
[INFO] tweaked toml for crates.io crate from_file 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f80f27fb1c98041e34576e7b3c607c729b4c08681ae76c82c7a2949f47e32d37
[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" "f80f27fb1c98041e34576e7b3c607c729b4c08681ae76c82c7a2949f47e32d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80f27fb1c98041e34576e7b3c607c729b4c08681ae76c82c7a2949f47e32d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80f27fb1c98041e34576e7b3c607c729b4c08681ae76c82c7a2949f47e32d37", kill_on_drop: false }`
[INFO] [stdout] f80f27fb1c98041e34576e7b3c607c729b4c08681ae76c82c7a2949f47e32d37
[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=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" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c0bf3993231903e3bd1e8e82665c59ee281841b9da0633a1f12fa15fc12c8eb
[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" "2c0bf3993231903e3bd1e8e82665c59ee281841b9da0633a1f12fa15fc12c8eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling from_file_derive v0.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking from_file v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.65s
[INFO] running `Command { std: "docker" "inspect" "2c0bf3993231903e3bd1e8e82665c59ee281841b9da0633a1f12fa15fc12c8eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c0bf3993231903e3bd1e8e82665c59ee281841b9da0633a1f12fa15fc12c8eb", kill_on_drop: false }`
[INFO] [stdout] 2c0bf3993231903e3bd1e8e82665c59ee281841b9da0633a1f12fa15fc12c8eb