[INFO] cloning repository https://github.com/OwenChia/rustlings-solutions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OwenChia/rustlings-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOwenChia%2Frustlings-solutions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOwenChia%2Frustlings-solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6e9c2a76f34a45731439d4bf46f935661f43f0f
[INFO] checking OwenChia/rustlings-solutions against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOwenChia%2Frustlings-solutions" "/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/OwenChia/rustlings-solutions on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OwenChia/rustlings-solutions
[INFO] finished tweaking git repo https://github.com/OwenChia/rustlings-solutions
[INFO] tweaked toml for git repo https://github.com/OwenChia/rustlings-solutions written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/OwenChia/rustlings-solutions already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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[INFO] the lockfile is outdated, regenerating it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" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57cf6b05f23ca906147453220ee8b7e7368b60d1336bebeab700efedb346ce48
[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" "57cf6b05f23ca906147453220ee8b7e7368b60d1336bebeab700efedb346ce48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57cf6b05f23ca906147453220ee8b7e7368b60d1336bebeab700efedb346ce48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57cf6b05f23ca906147453220ee8b7e7368b60d1336bebeab700efedb346ce48", kill_on_drop: false }`
[INFO] [stdout] 57cf6b05f23ca906147453220ee8b7e7368b60d1336bebeab700efedb346ce48
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30783ea23b365b917c2e15bd33f9ced2a6ec04f4df0a10fab56bbb6f8d10ee9e
[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" "30783ea23b365b917c2e15bd33f9ced2a6ec04f4df0a10fab56bbb6f8d10ee9e", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[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 atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking console v0.7.7
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking indicatif v0.10.3
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking rustlings v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking escargot v0.4.0
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.87s
[INFO] running `Command { std: "docker" "inspect" "30783ea23b365b917c2e15bd33f9ced2a6ec04f4df0a10fab56bbb6f8d10ee9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30783ea23b365b917c2e15bd33f9ced2a6ec04f4df0a10fab56bbb6f8d10ee9e", kill_on_drop: false }`
[INFO] [stdout] 30783ea23b365b917c2e15bd33f9ced2a6ec04f4df0a10fab56bbb6f8d10ee9e
