[INFO] cloning repository https://github.com/sts10/prefix_checkers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sts10/prefix_checkers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fprefix_checkers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fprefix_checkers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 098a41ff8c938793f9f0403d90ac769ef6cf82b5
[INFO] checking sts10/prefix_checkers against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fprefix_checkers" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sts10/prefix_checkers on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sts10/prefix_checkers
[INFO] finished tweaking git repo https://github.com/sts10/prefix_checkers
[INFO] tweaked toml for git repo https://github.com/sts10/prefix_checkers written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/sts10/prefix_checkers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fst v0.4.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9dd8991e6bde14f8c3d6277fd1dd06877206804c382873b9e33888e78c9a1e0a
[INFO] running `Command { std: "docker" "start" "-a" "9dd8991e6bde14f8c3d6277fd1dd06877206804c382873b9e33888e78c9a1e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dd8991e6bde14f8c3d6277fd1dd06877206804c382873b9e33888e78c9a1e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dd8991e6bde14f8c3d6277fd1dd06877206804c382873b9e33888e78c9a1e0a", kill_on_drop: false }`
[INFO] [stdout] 9dd8991e6bde14f8c3d6277fd1dd06877206804c382873b9e33888e78c9a1e0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5e4613a37be5b2ad094a411fa14314cb509569bab0bf2aaeb03eac53b7aeb36
[INFO] running `Command { std: "docker" "start" "-a" "b5e4613a37be5b2ad094a411fa14314cb509569bab0bf2aaeb03eac53b7aeb36", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling fst v0.4.6
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking prefix_checkers v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling cast v0.2.6
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]    Migrating benches/prefixers.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.28s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking prefix_checkers v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.97s
[INFO] running `Command { std: "docker" "inspect" "b5e4613a37be5b2ad094a411fa14314cb509569bab0bf2aaeb03eac53b7aeb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e4613a37be5b2ad094a411fa14314cb509569bab0bf2aaeb03eac53b7aeb36", kill_on_drop: false }`
[INFO] [stdout] b5e4613a37be5b2ad094a411fa14314cb509569bab0bf2aaeb03eac53b7aeb36