[INFO] fetching crate stegano-core 0.3.2...
[INFO] checking stegano-core-0.3.2 against master#119d2a1a98fe87d4ae6cabf12134a0ef2fb95851 for pr-75180
[INFO] extracting crate stegano-core 0.3.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate stegano-core 0.3.2 on toolchain 119d2a1a98fe87d4ae6cabf12134a0ef2fb95851
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stegano-core 0.3.2
[INFO] finished tweaking crates.io crate stegano-core 0.3.2
[INFO] tweaked toml for crates.io crate stegano-core 0.3.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b8ea2b53fb6637ef55d076fbde6ce288db29935c0165b923bc8951e4b121008
[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" "6b8ea2b53fb6637ef55d076fbde6ce288db29935c0165b923bc8951e4b121008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b8ea2b53fb6637ef55d076fbde6ce288db29935c0165b923bc8951e4b121008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b8ea2b53fb6637ef55d076fbde6ce288db29935c0165b923bc8951e4b121008", kill_on_drop: false }`
[INFO] [stdout] 6b8ea2b53fb6637ef55d076fbde6ce288db29935c0165b923bc8951e4b121008
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "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] c94d946a089c28d4b0a5d56cb45099fa28146faaf5ae19ea8037d83168a8d5ca
[INFO] running `Command { std: "docker" "start" "-a" "c94d946a089c28d4b0a5d56cb45099fa28146faaf5ae19ea8037d83168a8d5ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking podio v0.1.7
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bitstream-io v0.8.5
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking aes-soft v0.4.0
[INFO] [stderr]     Checking block-modes v0.5.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling hex-literal-impl v0.2.2
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking bzip2 v0.4.1
[INFO] [stderr]     Checking zip v0.5.6
[INFO] [stderr]     Checking image v0.23.8
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking stegano-core v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling speculate v0.1.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.61s
[INFO] running `Command { std: "docker" "inspect" "c94d946a089c28d4b0a5d56cb45099fa28146faaf5ae19ea8037d83168a8d5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c94d946a089c28d4b0a5d56cb45099fa28146faaf5ae19ea8037d83168a8d5ca", kill_on_drop: false }`
[INFO] [stdout] c94d946a089c28d4b0a5d56cb45099fa28146faaf5ae19ea8037d83168a8d5ca