[INFO] cloning repository https://github.com/rrcobb/small-strings-codealong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rrcobb/small-strings-codealong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrcobb%2Fsmall-strings-codealong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrcobb%2Fsmall-strings-codealong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3814763b7aef1f14e95ffcdcb06ab594ee6e228d
[INFO] checking rrcobb/small-strings-codealong against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrcobb%2Fsmall-strings-codealong" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rrcobb/small-strings-codealong on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rrcobb/small-strings-codealong
[INFO] finished tweaking git repo https://github.com/rrcobb/small-strings-codealong
[INFO] tweaked toml for git repo https://github.com/rrcobb/small-strings-codealong written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/rrcobb/small-strings-codealong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argh v0.1.3
[INFO] [stderr]   Downloaded argh_shared v0.1.1
[INFO] [stderr]   Downloaded argh_derive v0.1.1
[INFO] [stderr]   Downloaded smol_str v0.1.16
[INFO] [stderr]   Downloaded smartstring v0.2.2
[INFO] [stderr]   Downloaded parse-display-derive v0.1.2
[INFO] [stderr]   Downloaded bytesize v1.0.1
[INFO] [stderr]   Downloaded parse-display v0.1.2
[INFO] [stderr]   Downloaded drawille v0.2.3
[INFO] [stderr]   Downloaded textplots v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e6d59c631ea9dc9b4708013d12d72cc28a4e131947a2e2575466a9f02d8fedf
[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" "3e6d59c631ea9dc9b4708013d12d72cc28a4e131947a2e2575466a9f02d8fedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e6d59c631ea9dc9b4708013d12d72cc28a4e131947a2e2575466a9f02d8fedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e6d59c631ea9dc9b4708013d12d72cc28a4e131947a2e2575466a9f02d8fedf", kill_on_drop: false }`
[INFO] [stdout] 3e6d59c631ea9dc9b4708013d12d72cc28a4e131947a2e2575466a9f02d8fedf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0924a577c083ce048ee5d9dde3c74c781a50dd8c7fe8548b25a5614949871db8
[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" "0924a577c083ce048ee5d9dde3c74c781a50dd8c7fe8548b25a5614949871db8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling argh_shared v0.1.1
[INFO] [stderr]     Checking drawille v0.2.3
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking bytesize v1.0.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]     Checking smartstring v0.2.2
[INFO] [stderr]     Checking textplots v0.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling parse-display-derive v0.1.2
[INFO] [stderr]    Compiling argh_derive v0.1.1
[INFO] [stderr]     Checking argh v0.1.3
[INFO] [stderr]     Checking parse-display v0.1.2
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking smol_str v0.1.16
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking small v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.93s
[INFO] running `Command { std: "docker" "inspect" "0924a577c083ce048ee5d9dde3c74c781a50dd8c7fe8548b25a5614949871db8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0924a577c083ce048ee5d9dde3c74c781a50dd8c7fe8548b25a5614949871db8", kill_on_drop: false }`
[INFO] [stdout] 0924a577c083ce048ee5d9dde3c74c781a50dd8c7fe8548b25a5614949871db8