[INFO] fetching crate stegasaurus 0.1.1...
[INFO] checking stegasaurus-0.1.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate stegasaurus 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate stegasaurus 0.1.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stegasaurus 0.1.1
[INFO] finished tweaking crates.io crate stegasaurus 0.1.1
[INFO] tweaked toml for crates.io crate stegasaurus 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate stegasaurus 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded memoffset v0.5.1
[INFO] [stderr]   Downloaded gif v0.10.2
[INFO] [stderr]   Downloaded arrayvec v0.4.11
[INFO] [stderr]   Downloaded adler32 v1.0.3
[INFO] [stderr]   Downloaded rayon-core v1.5.0
[INFO] [stderr]   Downloaded scopeguard v1.0.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.2
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded autocfg v0.1.6
[INFO] [stderr]   Downloaded tiff v0.3.1
[INFO] [stderr]   Downloaded image v0.22.1
[INFO] [stderr]   Downloaded rayon v1.1.0
[INFO] [stderr]   Downloaded keccak v0.1.0
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.15
[INFO] [stderr]   Downloaded sha3 v0.8.2
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.3
[INFO] [stderr]   Downloaded num_cpus v1.10.1
[INFO] [stderr]   Downloaded png v0.15.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded block-padding v0.1.4
[INFO] [stderr]   Downloaded nodrop v0.1.13
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 662b12803c0f88900e05f2031597985ef3c91e9f65329013be5208ef93bbd945
[INFO] running `Command { std: "docker" "start" "-a" "662b12803c0f88900e05f2031597985ef3c91e9f65329013be5208ef93bbd945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "662b12803c0f88900e05f2031597985ef3c91e9f65329013be5208ef93bbd945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "662b12803c0f88900e05f2031597985ef3c91e9f65329013be5208ef93bbd945", kill_on_drop: false }`
[INFO] [stdout] 662b12803c0f88900e05f2031597985ef3c91e9f65329013be5208ef93bbd945
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 46074c0f773a67475f35dca44ef634f2816bb8362a9fcf3a91f390d491ffb89f
[INFO] running `Command { std: "docker" "start" "-a" "46074c0f773a67475f35dca44ef634f2816bb8362a9fcf3a91f390d491ffb89f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.22.1
[INFO] [stderr]     Checking stegasaurus v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.42s
[INFO] running `Command { std: "docker" "inspect" "46074c0f773a67475f35dca44ef634f2816bb8362a9fcf3a91f390d491ffb89f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46074c0f773a67475f35dca44ef634f2816bb8362a9fcf3a91f390d491ffb89f", kill_on_drop: false }`
[INFO] [stdout] 46074c0f773a67475f35dca44ef634f2816bb8362a9fcf3a91f390d491ffb89f