[INFO] cloning repository https://github.com/maxcell/rewrite-exercise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxcell/rewrite-exercise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxcell%2Frewrite-exercise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxcell%2Frewrite-exercise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96a8a40a938f2f24c2e9c183757db1424c43ff96
[INFO] checking maxcell/rewrite-exercise against master#0e517d38ad0e72f93c734b14fabd4bb9b7441de6 for pr-140557-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxcell%2Frewrite-exercise" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxcell/rewrite-exercise on toolchain 0e517d38ad0e72f93c734b14fabd4bb9b7441de6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maxcell/rewrite-exercise
[INFO] finished tweaking git repo https://github.com/maxcell/rewrite-exercise
[INFO] tweaked toml for git repo https://github.com/maxcell/rewrite-exercise written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/maxcell/rewrite-exercise 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" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thin-slice v0.1.1
[INFO] [stderr]   Downloaded smallvec v0.6.14
[INFO] [stderr]   Downloaded proc-macro2 v1.0.32
[INFO] [stderr]   Downloaded cssparser-macros v0.3.6
[INFO] [stderr]   Downloaded procedural-masquerade v0.1.7
[INFO] [stderr]   Downloaded phf v0.7.24
[INFO] [stderr]   Downloaded phf_generator v0.7.24
[INFO] [stderr]   Downloaded dtoa-short v0.3.3
[INFO] [stderr]   Downloaded servo_arc v0.1.1
[INFO] [stderr]   Downloaded maybe-uninit v2.0.0
[INFO] [stderr]   Downloaded siphasher v0.2.3
[INFO] [stderr]   Downloaded phf_shared v0.7.24
[INFO] [stderr]   Downloaded phf_codegen v0.7.24
[INFO] [stderr]   Downloaded quote v1.0.10
[INFO] [stderr]   Downloaded syn v1.0.81
[INFO] [stderr]   Downloaded lol_html v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.106
[INFO] [stderr]   Downloaded encoding_rs v0.8.29
[INFO] [stderr]   Downloaded selectors v0.21.0
[INFO] [stderr]   Downloaded cssparser v0.25.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a11ded06927d17ddbc771250c4f1cbc1a9f8fb41b0c36265b4f884bc827bb1cd
[INFO] running `Command { std: "docker" "start" "-a" "a11ded06927d17ddbc771250c4f1cbc1a9f8fb41b0c36265b4f884bc827bb1cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a11ded06927d17ddbc771250c4f1cbc1a9f8fb41b0c36265b4f884bc827bb1cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a11ded06927d17ddbc771250c4f1cbc1a9f8fb41b0c36265b4f884bc827bb1cd", kill_on_drop: false }`
[INFO] [stdout] a11ded06927d17ddbc771250c4f1cbc1a9f8fb41b0c36265b4f884bc827bb1cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 445bb2c07b4659e9c4a805720522f4c73a582023afb0d1c369bacfca998e950a
[INFO] running `Command { std: "docker" "start" "-a" "445bb2c07b4659e9c4a805720522f4c73a582023afb0d1c369bacfca998e950a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling procedural-masquerade v0.1.7
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]    Compiling cssparser v0.25.9
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking lol_html v0.2.0
[INFO] [stderr]     Checking beef v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.47s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lol_html v0.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "445bb2c07b4659e9c4a805720522f4c73a582023afb0d1c369bacfca998e950a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445bb2c07b4659e9c4a805720522f4c73a582023afb0d1c369bacfca998e950a", kill_on_drop: false }`
[INFO] [stdout] 445bb2c07b4659e9c4a805720522f4c73a582023afb0d1c369bacfca998e950a