[INFO] cloning repository https://github.com/fasterthanlime/small-str-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fasterthanlime/small-str-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffasterthanlime%2Fsmall-str-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffasterthanlime%2Fsmall-str-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 143cf88885844ee81da29499f04fa4b81a427db8
[INFO] checking fasterthanlime/small-str-bench against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffasterthanlime%2Fsmall-str-bench" "/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/fasterthanlime/small-str-bench on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fasterthanlime/small-str-bench
[INFO] finished tweaking git repo https://github.com/fasterthanlime/small-str-bench
[INFO] tweaked toml for git repo https://github.com/fasterthanlime/small-str-bench written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/fasterthanlime/small-str-bench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b0619671bc057dc9aca86e9640fb07d1719b0700e33f005d03b4b15a2955e2d
[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" "8b0619671bc057dc9aca86e9640fb07d1719b0700e33f005d03b4b15a2955e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b0619671bc057dc9aca86e9640fb07d1719b0700e33f005d03b4b15a2955e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0619671bc057dc9aca86e9640fb07d1719b0700e33f005d03b4b15a2955e2d", kill_on_drop: false }`
[INFO] [stdout] 8b0619671bc057dc9aca86e9640fb07d1719b0700e33f005d03b4b15a2955e2d
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 117d9644bdf046038ac331034910fd7fad30ccc115e22d958cd1445bb8ffbd9e
[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" "117d9644bdf046038ac331034910fd7fad30ccc115e22d958cd1445bb8ffbd9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking smartstring v0.2.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking bothstr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.64s
[INFO] running `Command { std: "docker" "inspect" "117d9644bdf046038ac331034910fd7fad30ccc115e22d958cd1445bb8ffbd9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "117d9644bdf046038ac331034910fd7fad30ccc115e22d958cd1445bb8ffbd9e", kill_on_drop: false }`
[INFO] [stdout] 117d9644bdf046038ac331034910fd7fad30ccc115e22d958cd1445bb8ffbd9e