[INFO] cloning repository https://github.com/minauteur/io-png
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/minauteur/io-png" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminauteur%2Fio-png", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminauteur%2Fio-png'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5bb9bcbbcd029b71b4e6f307f2e6b1aa02d1c95d
[INFO] checking minauteur/io-png against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminauteur%2Fio-png" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/minauteur/io-png on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/minauteur/io-png
[INFO] finished tweaking git repo https://github.com/minauteur/io-png
[INFO] tweaked toml for git repo https://github.com/minauteur/io-png written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/minauteur/io-png already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded image v0.18.0
[INFO] [stderr]   Downloaded inflate v0.3.4
[INFO] [stderr]   Downloaded png v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] b216c6a7876e2a9b53138c4ddf55da42eeeb72584f7b91ef49c70877d6f71ed9
[INFO] running `Command { std: "docker" "start" "-a" "b216c6a7876e2a9b53138c4ddf55da42eeeb72584f7b91ef49c70877d6f71ed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b216c6a7876e2a9b53138c4ddf55da42eeeb72584f7b91ef49c70877d6f71ed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b216c6a7876e2a9b53138c4ddf55da42eeeb72584f7b91ef49c70877d6f71ed9", kill_on_drop: false }`
[INFO] [stdout] b216c6a7876e2a9b53138c4ddf55da42eeeb72584f7b91ef49c70877d6f71ed9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29fa6d81ba27e393af4a0eb2555ef243bdfa73c913921d007ec271bebd6da731
[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" "29fa6d81ba27e393af4a0eb2555ef243bdfa73c913921d007ec271bebd6da731", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rayon-core v1.8.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking io-png v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.86s
[INFO] running `Command { std: "docker" "inspect" "29fa6d81ba27e393af4a0eb2555ef243bdfa73c913921d007ec271bebd6da731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29fa6d81ba27e393af4a0eb2555ef243bdfa73c913921d007ec271bebd6da731", kill_on_drop: false }`
[INFO] [stdout] 29fa6d81ba27e393af4a0eb2555ef243bdfa73c913921d007ec271bebd6da731