[INFO] cloning repository https://github.com/ericdeansanchez/bifrost
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ericdeansanchez/bifrost" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericdeansanchez%2Fbifrost", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericdeansanchez%2Fbifrost'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5317ea69e57f98376f605d57f27ecfafd78754f4
[INFO] checking ericdeansanchez/bifrost against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericdeansanchez%2Fbifrost" "/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/ericdeansanchez/bifrost on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ericdeansanchez/bifrost
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/ericdeansanchez/bifrost
[INFO] tweaked toml for git repo https://github.com/ericdeansanchez/bifrost written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ericdeansanchez/bifrost 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ansi_term v0.7.5
[INFO] [stderr]   Downloaded term v0.2.14
[INFO] [stderr]   Downloaded serde_derive v1.0.91
[INFO] [stderr]   Downloaded subprocess v0.1.18
[INFO] [stderr]   Downloaded spinner v0.3.0
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fc54231cb7053907dca22b3dc7d3a3939536e1cdfdd058241113b9132beb7a1
[INFO] running `Command { std: "docker" "start" "-a" "6fc54231cb7053907dca22b3dc7d3a3939536e1cdfdd058241113b9132beb7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fc54231cb7053907dca22b3dc7d3a3939536e1cdfdd058241113b9132beb7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc54231cb7053907dca22b3dc7d3a3939536e1cdfdd058241113b9132beb7a1", kill_on_drop: false }`
[INFO] [stdout] 6fc54231cb7053907dca22b3dc7d3a3939536e1cdfdd058241113b9132beb7a1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b27395914d38712f09d20e29d25b4f8536473095929cd79a43d6acd5b747c7d
[INFO] running `Command { std: "docker" "start" "-a" "2b27395914d38712f09d20e29d25b4f8536473095929cd79a43d6acd5b747c7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.7.5
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking term v0.2.14
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking subprocess v0.1.18
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking spinner v0.3.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking bifrost v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]   --> src/bifrost/core/config.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use dirs;
[INFO] [stdout]    |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]   --> src/bifrost/core/config.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use failure;
[INFO] [stdout]    |     ^^^^^^^ the item `failure` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `subprocess` is imported redundantly
[INFO] [stdout]   --> src/bifrost/core/workspace.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | use subprocess::{self, Popen, PopenConfig, Redirection};
[INFO] [stdout]    |                  ^^^^ the item `subprocess` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/bifrost/util/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use failure;
[INFO] [stdout]   |     ^^^^^^^ the item `failure` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/bifrost/core/app.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         .author(crate_authors!(",\n"))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/bifrost/core/app.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         .author(crate_authors!(",\n"))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]   --> src/bifrost/core/config.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use dirs;
[INFO] [stdout]    |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]   --> src/bifrost/core/config.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use failure;
[INFO] [stdout]    |     ^^^^^^^ the item `failure` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `subprocess` is imported redundantly
[INFO] [stdout]   --> src/bifrost/core/workspace.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | use subprocess::{self, Popen, PopenConfig, Redirection};
[INFO] [stdout]    |                  ^^^^ the item `subprocess` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/bifrost/util/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use failure;
[INFO] [stdout]   |     ^^^^^^^ the item `failure` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/bifrost/util/docker.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/bifrost/core/app.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         .author(crate_authors!(",\n"))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/bifrost/core/app.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         .author(crate_authors!(",\n"))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/bifrost/util/process_builder.rs:179:43
[INFO] [stdout]     |
[INFO] [stdout] 179 |             assert_eq!("process error", e.description());
[INFO] [stdout]     |                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bifrost/core/workingdir.rs:263:31
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let to_dir = from.0.path().clone();
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `std::path::Path` does not implement `Clone`, so calling `clone` on `&std::path::Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 263 -     let to_dir = from.0.path().clone();
[INFO] [stdout] 263 +     let to_dir = from.0.path();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bifrost/core/workingdir.rs:276:31
[INFO] [stdout]     |
[INFO] [stdout] 276 |     let to_dir = from.0.path().clone();
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `std::path::Path` does not implement `Clone`, so calling `clone` on `&std::path::Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 276 -     let to_dir = from.0.path().clone();
[INFO] [stdout] 276 +     let to_dir = from.0.path();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bifrost/core/workingdir.rs:263:31
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let to_dir = from.0.path().clone();
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 263 -     let to_dir = from.0.path().clone();
[INFO] [stdout] 263 +     let to_dir = from.0.path();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/bifrost/core/workingdir.rs:276:31
[INFO] [stdout]     |
[INFO] [stdout] 276 |     let to_dir = from.0.path().clone();
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Path` does not implement `Clone`, so calling `clone` on `&Path` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 276 -     let to_dir = from.0.path().clone();
[INFO] [stdout] 276 +     let to_dir = from.0.path();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]    --> src/bin/bifrost/commands/setup.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     use dirs;
[INFO] [stdout]     |         ^^^^ the item `dirs` is already defined by prelude
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.10s
[INFO] running `Command { std: "docker" "inspect" "2b27395914d38712f09d20e29d25b4f8536473095929cd79a43d6acd5b747c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b27395914d38712f09d20e29d25b4f8536473095929cd79a43d6acd5b747c7d", kill_on_drop: false }`
[INFO] [stdout] 2b27395914d38712f09d20e29d25b4f8536473095929cd79a43d6acd5b747c7d