[INFO] crate shrink 0.2.0 is already in cache
[INFO] checking shrink-0.2.0 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate shrink 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate shrink 0.2.0 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shrink 0.2.0
[INFO] finished tweaking crates.io crate shrink 0.2.0
[INFO] tweaked toml for crates.io crate shrink 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate shrink 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 779ccca065b997783f3efa6490e6826b136c812a232a0e358da007d9b31ae9c5
[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" "779ccca065b997783f3efa6490e6826b136c812a232a0e358da007d9b31ae9c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "779ccca065b997783f3efa6490e6826b136c812a232a0e358da007d9b31ae9c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "779ccca065b997783f3efa6490e6826b136c812a232a0e358da007d9b31ae9c5", kill_on_drop: false }`
[INFO] [stdout] 779ccca065b997783f3efa6490e6826b136c812a232a0e358da007d9b31ae9c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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] f09e4f6401ceb1666019d239033fc2486470eea3ee72d81e7a103aa5f4620cf1
[INFO] running `Command { std: "docker" "start" "-a" "f09e4f6401ceb1666019d239033fc2486470eea3ee72d81e7a103aa5f4620cf1", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking mutate_once v0.1.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking kamadak-exif v0.4.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[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 png v0.15.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.5
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking structopt v0.3.5
[INFO] [stderr]     Checking shrink v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.68s
[INFO] running `Command { std: "docker" "inspect" "f09e4f6401ceb1666019d239033fc2486470eea3ee72d81e7a103aa5f4620cf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f09e4f6401ceb1666019d239033fc2486470eea3ee72d81e7a103aa5f4620cf1", kill_on_drop: false }`
[INFO] [stdout] f09e4f6401ceb1666019d239033fc2486470eea3ee72d81e7a103aa5f4620cf1