[INFO] fetching crate fn-error-context 0.1.2...
[INFO] checking fn-error-context-0.1.2 against master#7dc9ff5c629753b6930ecfe9a0446538b8e25fb7 for pr-85387
[INFO] extracting crate fn-error-context 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate fn-error-context 0.1.2 on toolchain 7dc9ff5c629753b6930ecfe9a0446538b8e25fb7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fn-error-context 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate fn-error-context 0.1.2
[INFO] tweaked toml for crates.io crate fn-error-context 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate fn-error-context 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "fetch" "--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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a4ca12cb73cc56b1980e3953dc343f5dba73d5f458fbce3fd549460743dfe2a
[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" "9a4ca12cb73cc56b1980e3953dc343f5dba73d5f458fbce3fd549460743dfe2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a4ca12cb73cc56b1980e3953dc343f5dba73d5f458fbce3fd549460743dfe2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a4ca12cb73cc56b1980e3953dc343f5dba73d5f458fbce3fd549460743dfe2a", kill_on_drop: false }`
[INFO] [stdout] 9a4ca12cb73cc56b1980e3953dc343f5dba73d5f458fbce3fd549460743dfe2a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 39b4ba0ed4122e04d48769ee3e7c5b350eab623b58c65f3a7756f74614b0075e
[INFO] running `Command { std: "docker" "start" "-a" "39b4ba0ed4122e04d48769ee3e7c5b350eab623b58c65f3a7756f74614b0075e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking backtrace v0.3.57
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking fn-error-context v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking version-sync v0.9.2
[INFO] [stderr]     Checking trybuild v1.0.42
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.62s
[INFO] running `Command { std: "docker" "inspect" "39b4ba0ed4122e04d48769ee3e7c5b350eab623b58c65f3a7756f74614b0075e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b4ba0ed4122e04d48769ee3e7c5b350eab623b58c65f3a7756f74614b0075e", kill_on_drop: false }`
[INFO] [stdout] 39b4ba0ed4122e04d48769ee3e7c5b350eab623b58c65f3a7756f74614b0075e