[INFO] cloning repository https://github.com/NGnius/rcbup-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NGnius/rcbup-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNGnius%2Frcbup-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNGnius%2Frcbup-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4888a9626dd51f2dabd91339b8794151061d2d76
[INFO] checking NGnius/rcbup-rs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNGnius%2Frcbup-rs" "/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/NGnius/rcbup-rs 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/NGnius/rcbup-rs
[INFO] finished tweaking git repo https://github.com/NGnius/rcbup-rs
[INFO] tweaked toml for git repo https://github.com/NGnius/rcbup-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NGnius/rcbup-rs 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded highhash v0.1.1
[INFO] [stderr]   Downloaded ureq v2.2.0
[INFO] [stderr]   Downloaded libfj_parsable_macro_derive v0.5.3
[INFO] [stderr]   Downloaded libfj v0.5.3
[INFO] [stderr]   Downloaded argh v0.1.6
[INFO] [stderr]   Downloaded mint v0.5.7
[INFO] [stderr]   Downloaded half v1.8.0
[INFO] [stderr]   Downloaded pkg-config v0.3.20
[INFO] [stderr]   Downloaded bumpalo v3.7.1
[INFO] [stderr]   Downloaded reqwest v0.11.5
[INFO] [stderr]   Downloaded argh_shared v0.1.6
[INFO] [stderr]   Downloaded obj v0.10.2
[INFO] [stderr]   Downloaded argh_derive v0.1.6
[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] b5a6aebd80d487d273fe86fa2dec5905dd3796862e6e120b69f8658f1f28f8d6
[INFO] running `Command { std: "docker" "start" "-a" "b5a6aebd80d487d273fe86fa2dec5905dd3796862e6e120b69f8658f1f28f8d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5a6aebd80d487d273fe86fa2dec5905dd3796862e6e120b69f8658f1f28f8d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5a6aebd80d487d273fe86fa2dec5905dd3796862e6e120b69f8658f1f28f8d6", kill_on_drop: false }`
[INFO] [stdout] b5a6aebd80d487d273fe86fa2dec5905dd3796862e6e120b69f8658f1f28f8d6
[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] ecb1948262bc3fa6c73cc71e7228808a77552598dcae10a183484d0f0183d3a4
[INFO] running `Command { std: "docker" "start" "-a" "ecb1948262bc3fa6c73cc71e7228808a77552598dcae10a183484d0f0183d3a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]     Checking tinyvec v1.5.0
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking mint v0.5.7
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]    Compiling argh_shared v0.1.6
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking half v1.8.0
[INFO] [stderr]     Checking highhash v0.1.1
[INFO] [stderr]     Checking obj v0.10.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]     Checking genmesh v0.6.2
[INFO] [stderr]     Checking tokio-util v0.6.8
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.6
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling argh_derive v0.1.6
[INFO] [stderr]    Compiling libfj_parsable_macro_derive v0.5.3
[INFO] [stderr]     Checking argh v0.1.6
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]     Checking hyper v0.14.13
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking ureq v2.2.0
[INFO] [stderr]     Checking reqwest v0.11.5
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling num_enum_derive v0.5.4
[INFO] [stderr]     Checking num_enum v0.5.4
[INFO] [stderr]     Checking libfj v0.5.3
[INFO] [stderr]     Checking rcbup-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/context.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/context.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` 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 10.67s
[INFO] running `Command { std: "docker" "inspect" "ecb1948262bc3fa6c73cc71e7228808a77552598dcae10a183484d0f0183d3a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecb1948262bc3fa6c73cc71e7228808a77552598dcae10a183484d0f0183d3a4", kill_on_drop: false }`
[INFO] [stdout] ecb1948262bc3fa6c73cc71e7228808a77552598dcae10a183484d0f0183d3a4