[INFO] cloning repository https://github.com/oatley/maps-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oatley/maps-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foatley%2Fmaps-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foatley%2Fmaps-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 402df9c5c52a44de0575b897ce42aa05895bc1ae
[INFO] checking oatley/maps-rust against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foatley%2Fmaps-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oatley/maps-rust on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oatley/maps-rust
[INFO] finished tweaking git repo https://github.com/oatley/maps-rust
[INFO] tweaked toml for git repo https://github.com/oatley/maps-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/oatley/maps-rust 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b85df35475f62b828079628864ca35ae68af5acb854b373a25404e339f97498
[INFO] running `Command { std: "docker" "start" "-a" "4b85df35475f62b828079628864ca35ae68af5acb854b373a25404e339f97498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b85df35475f62b828079628864ca35ae68af5acb854b373a25404e339f97498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b85df35475f62b828079628864ca35ae68af5acb854b373a25404e339f97498", kill_on_drop: false }`
[INFO] [stdout] 4b85df35475f62b828079628864ca35ae68af5acb854b373a25404e339f97498
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f583050c39ca3670f8014d4ff4389f198581fcad9db35677174ed8c3ece544d
[INFO] running `Command { std: "docker" "start" "-a" "6f583050c39ca3670f8014d4ff4389f198581fcad9db35677174ed8c3ece544d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking flate2 v1.0.9
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking maps v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::string::String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `String` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::string::String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `String` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.72s
[INFO] running `Command { std: "docker" "inspect" "6f583050c39ca3670f8014d4ff4389f198581fcad9db35677174ed8c3ece544d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f583050c39ca3670f8014d4ff4389f198581fcad9db35677174ed8c3ece544d", kill_on_drop: false }`
[INFO] [stdout] 6f583050c39ca3670f8014d4ff4389f198581fcad9db35677174ed8c3ece544d