[INFO] cloning repository https://github.com/raffber/merge_tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raffber/merge_tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraffber%2Fmerge_tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraffber%2Fmerge_tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dcf60ffdae3c643706f17cb7303601e3e67767aa
[INFO] checking raffber/merge_tool against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraffber%2Fmerge_tool" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raffber/merge_tool on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/raffber/merge_tool
[INFO] finished tweaking git repo https://github.com/raffber/merge_tool
[INFO] tweaked toml for git repo https://github.com/raffber/merge_tool written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/raffber/merge_tool already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] 82fa4d534b1b05939ddef733581541df0be33a4b22556fc656bac114a297b3cd
[INFO] running `Command { std: "docker" "start" "-a" "82fa4d534b1b05939ddef733581541df0be33a4b22556fc656bac114a297b3cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82fa4d534b1b05939ddef733581541df0be33a4b22556fc656bac114a297b3cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82fa4d534b1b05939ddef733581541df0be33a4b22556fc656bac114a297b3cd", kill_on_drop: false }`
[INFO] [stdout] 82fa4d534b1b05939ddef733581541df0be33a4b22556fc656bac114a297b3cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f789cc901c59224b7631d92eeafdea8ab9ed0208f1546fd54a2eb1d94e813a66
[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" "f789cc901c59224b7631d92eeafdea8ab9ed0208f1546fd54a2eb1d94e813a66", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking merge_tool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.60s
[INFO] running `Command { std: "docker" "inspect" "f789cc901c59224b7631d92eeafdea8ab9ed0208f1546fd54a2eb1d94e813a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f789cc901c59224b7631d92eeafdea8ab9ed0208f1546fd54a2eb1d94e813a66", kill_on_drop: false }`
[INFO] [stdout] f789cc901c59224b7631d92eeafdea8ab9ed0208f1546fd54a2eb1d94e813a66