[INFO] fetching crate qr-gen 1.0.1...
[INFO] checking qr-gen-1.0.1 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate qr-gen 1.0.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate qr-gen 1.0.1 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qr-gen 1.0.1
[INFO] finished tweaking crates.io crate qr-gen 1.0.1
[INFO] tweaked toml for crates.io crate qr-gen 1.0.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate qr-gen 1.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3c433dab2b4ddf38b608c747f45c7b1de3ed8ff53acaf7041327d5821155360
[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" "e3c433dab2b4ddf38b608c747f45c7b1de3ed8ff53acaf7041327d5821155360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3c433dab2b4ddf38b608c747f45c7b1de3ed8ff53acaf7041327d5821155360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c433dab2b4ddf38b608c747f45c7b1de3ed8ff53acaf7041327d5821155360", kill_on_drop: false }`
[INFO] [stdout] e3c433dab2b4ddf38b608c747f45c7b1de3ed8ff53acaf7041327d5821155360
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] b49fc81a340eff9c4123ece0eabe5e8d854c7f83803635ac08c5c170ad1cae65
[INFO] running `Command { std: "docker" "start" "-a" "b49fc81a340eff9c4123ece0eabe5e8d854c7f83803635ac08c5c170ad1cae65", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking bytemuck v1.4.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking ttf-parser v0.9.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking qrcodegen v1.6.0
[INFO] [stderr]     Checking kurbo v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]     Checking safe_arch v0.5.2
[INFO] [stderr]     Checking rgb v0.8.25
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking svgfilters v0.2.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking wide v0.6.4
[INFO] [stderr]     Checking rustybuzz v0.3.0
[INFO] [stderr]     Checking fontdb v0.5.1
[INFO] [stderr]     Checking tiny-skia v0.3.0
[INFO] [stderr]     Checking usvg v0.13.0
[INFO] [stderr]     Checking resvg v0.13.0
[INFO] [stderr]     Checking qr-gen v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.64s
[INFO] running `Command { std: "docker" "inspect" "b49fc81a340eff9c4123ece0eabe5e8d854c7f83803635ac08c5c170ad1cae65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b49fc81a340eff9c4123ece0eabe5e8d854c7f83803635ac08c5c170ad1cae65", kill_on_drop: false }`
[INFO] [stdout] b49fc81a340eff9c4123ece0eabe5e8d854c7f83803635ac08c5c170ad1cae65