[INFO] cloning repository https://github.com/letmutex/rust-substring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/letmutex/rust-substring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletmutex%2Frust-substring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletmutex%2Frust-substring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 992b826797a57478fcb63b1311a309213af20ad6
[INFO] checking letmutex/rust-substring against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletmutex%2Frust-substring" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/letmutex/rust-substring
[INFO] finished tweaking git repo https://github.com/letmutex/rust-substring
[INFO] tweaked toml for git repo https://github.com/letmutex/rust-substring written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/letmutex/rust-substring on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/letmutex/rust-substring already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0311f14c9397504afee2da8ff6fd85cecf8720bcd5607206716a284695d1171d
[INFO] running `Command { std: "docker" "start" "-a" "0311f14c9397504afee2da8ff6fd85cecf8720bcd5607206716a284695d1171d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0311f14c9397504afee2da8ff6fd85cecf8720bcd5607206716a284695d1171d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0311f14c9397504afee2da8ff6fd85cecf8720bcd5607206716a284695d1171d", kill_on_drop: false }`
[INFO] [stdout] 0311f14c9397504afee2da8ff6fd85cecf8720bcd5607206716a284695d1171d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75a219cd9515fb16f4190184850d74242ee65d445322f8f8f6e43d270e8635e0
[INFO] running `Command { std: "docker" "start" "-a" "75a219cd9515fb16f4190184850d74242ee65d445322f8f8f6e43d270e8635e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking plotters-backend v0.3.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking rust-substring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters-svg v0.3.6
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking plotters v0.3.6
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]     Checking serde_json v1.0.117
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.08s
[INFO] running `Command { std: "docker" "inspect" "75a219cd9515fb16f4190184850d74242ee65d445322f8f8f6e43d270e8635e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75a219cd9515fb16f4190184850d74242ee65d445322f8f8f6e43d270e8635e0", kill_on_drop: false }`
[INFO] [stdout] 75a219cd9515fb16f4190184850d74242ee65d445322f8f8f6e43d270e8635e0