[INFO] cloning repository https://github.com/tiatomee/natpl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tiatomee/natpl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiatomee%2Fnatpl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiatomee%2Fnatpl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7231b0ab25e075c2f7eccc4b216bc049fb25c331
[INFO] checking tiatomee/natpl against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiatomee%2Fnatpl" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tiatomee/natpl
[INFO] finished tweaking git repo https://github.com/tiatomee/natpl
[INFO] tweaked toml for git repo https://github.com/tiatomee/natpl written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tiatomee/natpl on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tiatomee/natpl 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5850c81a872086f53f60341d0612b2fb93ca659b1e29d95393b8d5f890f37d3d
[INFO] running `Command { std: "docker" "start" "-a" "5850c81a872086f53f60341d0612b2fb93ca659b1e29d95393b8d5f890f37d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5850c81a872086f53f60341d0612b2fb93ca659b1e29d95393b8d5f890f37d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5850c81a872086f53f60341d0612b2fb93ca659b1e29d95393b8d5f890f37d3d", kill_on_drop: false }`
[INFO] [stdout] 5850c81a872086f53f60341d0612b2fb93ca659b1e29d95393b8d5f890f37d3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd70e509dcd237f75281f26cb089ffc7b7b1b945e633ef14af1ada4d58f682c4
[INFO] running `Command { std: "docker" "start" "-a" "bd70e509dcd237f75281f26cb089ffc7b7b1b945e633ef14af1ada4d58f682c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.13
[INFO] [stderr]    Compiling az v1.1.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling rug v1.13.0
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking ariadne v0.1.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking fd-lock v3.0.0
[INFO] [stderr]     Checking nix v0.22.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking directories v4.0.1
[INFO] [stderr]     Checking owo-colors v3.0.1
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking fraction v0.9.0
[INFO] [stderr]     Checking rustyline v9.0.0
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking natpl v0.1.0 (/opt/rustwide/workdir/natpl)
[INFO] [stdout] warning: value assigned to `fc` is never read
[INFO] [stdout]    --> natpl/src/runtime.rs:786:9
[INFO] [stdout]     |
[INFO] [stdout] 786 |         fc: FC,
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fc` is never read
[INFO] [stdout]    --> natpl/src/runtime.rs:811:20
[INFO] [stdout]     |
[INFO] [stdout] 811 |     UnitMismatch { fc: FC, expected: Unit, found: Unit },
[INFO] [stdout]     |                    ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fc` is never read
[INFO] [stdout]    --> natpl/src/runtime.rs:786:9
[INFO] [stdout]     |
[INFO] [stdout] 786 |         fc: FC,
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fc` is never read
[INFO] [stdout]    --> natpl/src/runtime.rs:811:20
[INFO] [stdout]     |
[INFO] [stdout] 811 |     UnitMismatch { fc: FC, expected: Unit, found: Unit },
[INFO] [stdout]     |                    ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking natpl-repl v0.1.0 (/opt/rustwide/workdir/natpl-repl)
[INFO] [stderr]     Checking natpl-cli v0.1.0 (/opt/rustwide/workdir/natpl-cli)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 40s
[INFO] running `Command { std: "docker" "inspect" "bd70e509dcd237f75281f26cb089ffc7b7b1b945e633ef14af1ada4d58f682c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd70e509dcd237f75281f26cb089ffc7b7b1b945e633ef14af1ada4d58f682c4", kill_on_drop: false }`
[INFO] [stdout] bd70e509dcd237f75281f26cb089ffc7b7b1b945e633ef14af1ada4d58f682c4