[INFO] cloning repository https://github.com/ralexstokes/ubiquity
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ralexstokes/ubiquity" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fubiquity", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fubiquity'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0caffab5afd358699d4a9c7f233aaec2f7869eb1
[INFO] testing ralexstokes/ubiquity against master#ff2c56344c764af598ad33027e9c7a48881808ef for pr-118825
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fubiquity" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ralexstokes/ubiquity on toolchain ff2c56344c764af598ad33027e9c7a48881808ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ralexstokes/ubiquity
[INFO] finished tweaking git repo https://github.com/ralexstokes/ubiquity
[INFO] tweaked toml for git repo https://github.com/ralexstokes/ubiquity written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ralexstokes/ubiquity 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" "+ff2c56344c764af598ad33027e9c7a48881808ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing ralexstokes/ubiquity against try#5e4273472e1b2f223618a9b3def795f6224f241d for pr-118825
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fubiquity" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ralexstokes/ubiquity on toolchain 5e4273472e1b2f223618a9b3def795f6224f241d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ralexstokes/ubiquity
[INFO] finished tweaking git repo https://github.com/ralexstokes/ubiquity
[INFO] tweaked toml for git repo https://github.com/ralexstokes/ubiquity written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ralexstokes/ubiquity 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" "+5e4273472e1b2f223618a9b3def795f6224f241d" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing ralexstokes/ubiquity against try#5e4273472e1b2f223618a9b3def795f6224f241d for pr-118825
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fubiquity" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ralexstokes/ubiquity on toolchain 5e4273472e1b2f223618a9b3def795f6224f241d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ralexstokes/ubiquity
[INFO] finished tweaking git repo https://github.com/ralexstokes/ubiquity
[INFO] tweaked toml for git repo https://github.com/ralexstokes/ubiquity written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ralexstokes/ubiquity 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" "+5e4273472e1b2f223618a9b3def795f6224f241d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded terminfo v0.6.1
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] [stderr]   Downloaded rand_os v0.1.0
[INFO] [stderr]   Downloaded mortal v0.1.5
[INFO] [stderr]   Downloaded linefeed v0.5.4
[INFO] [stderr]   Downloaded nix v0.7.0
[INFO] [stderr]   Downloaded rand v0.6.3
[INFO] [stderr]   Downloaded nom v4.1.1
[INFO] [stderr]   Downloaded libc v0.2.46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d05b7b11c48dd054c292d4c4a75d642f320d5e39b39ddeb6ad7ce73afcd8f874
[INFO] running `Command { std: "docker" "start" "-a" "d05b7b11c48dd054c292d4c4a75d642f320d5e39b39ddeb6ad7ce73afcd8f874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d05b7b11c48dd054c292d4c4a75d642f320d5e39b39ddeb6ad7ce73afcd8f874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d05b7b11c48dd054c292d4c4a75d642f320d5e39b39ddeb6ad7ce73afcd8f874", kill_on_drop: false }`
[INFO] [stdout] d05b7b11c48dd054c292d4c4a75d642f320d5e39b39ddeb6ad7ce73afcd8f874
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9275349c5577763ba3ec3c93dffaec9d899b88ef73627e7df391ab2de8dfe5fb
[INFO] running `Command { std: "docker" "start" "-a" "9275349c5577763ba3ec3c93dffaec9d899b88ef73627e7df391ab2de8dfe5fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling smallvec v0.6.7
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling smallstr v0.1.0
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.0
[INFO] [stderr]    Compiling dirs v1.0.4
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling terminfo v0.6.1
[INFO] [stderr]    Compiling mortal v0.1.5
[INFO] [stderr]    Compiling linefeed v0.5.4
[INFO] [stderr]    Compiling ubiquity v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/evaluator/prelude.rs:109:10
[INFO] [stdout]     |
[INFO] [stdout] 109 |         .intersperse(" ".to_string())
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/evaluator/evaluator.rs:440:24
[INFO] [stdout]     |
[INFO] [stdout] 440 | fn lookup(coll: &Expr, key: &Expr, not_found: &Expr) -> Result<Expr> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.20s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.1.1, terminfo v0.6.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "9275349c5577763ba3ec3c93dffaec9d899b88ef73627e7df391ab2de8dfe5fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9275349c5577763ba3ec3c93dffaec9d899b88ef73627e7df391ab2de8dfe5fb", kill_on_drop: false }`
[INFO] [stdout] 9275349c5577763ba3ec3c93dffaec9d899b88ef73627e7df391ab2de8dfe5fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8618da9c65d623b3412daf6e6af42e5eb5ad8dfe0b11762ee25d75b42525dc2
[INFO] running `Command { std: "docker" "start" "-a" "f8618da9c65d623b3412daf6e6af42e5eb5ad8dfe0b11762ee25d75b42525dc2", kill_on_drop: false }`
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/evaluator/prelude.rs:109:10
[INFO] [stdout]     |
[INFO] [stdout] 109 |         .intersperse(" ".to_string())
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/evaluator/evaluator.rs:440:24
[INFO] [stdout]     |
[INFO] [stdout] 440 | fn lookup(coll: &Expr, key: &Expr, not_found: &Expr) -> Result<Expr> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ubiquity v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/evaluator/prelude.rs:109:10
[INFO] [stdout]     |
[INFO] [stdout] 109 |         .intersperse(" ".to_string())
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/evaluator/evaluator.rs:440:24
[INFO] [stdout]     |
[INFO] [stdout] 440 | fn lookup(coll: &Expr, key: &Expr, not_found: &Expr) -> Result<Expr> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.1.1, terminfo v0.6.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f8618da9c65d623b3412daf6e6af42e5eb5ad8dfe0b11762ee25d75b42525dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8618da9c65d623b3412daf6e6af42e5eb5ad8dfe0b11762ee25d75b42525dc2", kill_on_drop: false }`
[INFO] [stdout] f8618da9c65d623b3412daf6e6af42e5eb5ad8dfe0b11762ee25d75b42525dc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a49119197810e71e1b4c125dc1c049687d56601c4e0e6b04b3e7e3f59f445cdc
[INFO] running `Command { std: "docker" "start" "-a" "a49119197810e71e1b4c125dc1c049687d56601c4e0e6b04b3e7e3f59f445cdc", kill_on_drop: false }`
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/evaluator/prelude.rs:109:10
[INFO] [stderr]     |
[INFO] [stderr] 109 |         .intersperse(" ".to_string())
[INFO] [stderr]     |          ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr]     = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stderr]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/evaluator/evaluator.rs:440:24
[INFO] [stderr]     |
[INFO] [stderr] 440 | fn lookup(coll: &Expr, key: &Expr, not_found: &Expr) -> Result<Expr> {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ubiquity` (lib) generated 2 warnings (run `cargo fix --lib -p ubiquity` to apply 1 suggestion)
[INFO] [stderr] warning: `ubiquity` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.1.1, terminfo v0.6.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ubiquity-dc1c702ea341e471)
[INFO] [stdout] 
[INFO] [stdout] running 64 tests
[INFO] [stdout] test evaluator::env::tests::can_nest_envs ... ok
[INFO] [stdout] test evaluator::env::tests::can_overwrite_stuff ... ok
[INFO] [stdout] test evaluator::env::tests::can_insert_stuff ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_empty_from_src ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_fn ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_if_false ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_if_true ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_if_unevaluated ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_loop_no_recur ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_loop_recur ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_quote ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_quote_more ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_simple_arith ... ok
[INFO] [stdout] test evaluator::evaluator::tests::can_eval_simple_exprs ... ok
[INFO] [stdout] test evaluator::evaluator::tests::closures_respect_special_forms ... ok
[INFO] [stdout] test evaluator::evaluator::tests::test_env_evaluating ... ok
[INFO] [stdout] test evaluator::evaluator::tests::test_env_simple ... ok
[INFO] [stdout] test reader::lexer::tests::can_find_control_character ... ok
[INFO] [stdout] test reader::lexer::tests::can_find_unbalanced_string ... ok
[INFO] [stdout] test evaluator::evaluator::tests::test_simple_closures ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_comments ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_dispatch ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_delimiters ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_expressions ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_numbers ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_parens ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_strings ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_symbols ... ok
[INFO] [stdout] test reader::lexer::tests::can_lex_quotes ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_empty_list ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_empty_input ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_empty_map ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_empty_set ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_empty_string ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_empty_vector ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_false ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_expr_example ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_expr ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_list ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_map ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_multiple_empty_lists ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_nested_lists_and_map ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_nested_lists_and_set ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_nil ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_keywords ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_nested_empty_lists ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_numbers ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_numbers_multi ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_quote ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_set ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_special_symbols ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_strings ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_symbols ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_symbols_with_punctuation ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_symbols_whitespace ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_true ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_tricky_keywords ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_unbalanced_string ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_unbalanced_vectors ... ok
[INFO] [stdout] test reader::tests::can_read_expr ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_vector ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_unbalanced_maps ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_with_set ... ok
[INFO] [stdout] test reader::parser::tests::can_parse_unbalanced_lists ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 64 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/main.rs (/opt/rustwide/target/debug/deps/main-dc1c15fc3a06952b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ubiquity
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a49119197810e71e1b4c125dc1c049687d56601c4e0e6b04b3e7e3f59f445cdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a49119197810e71e1b4c125dc1c049687d56601c4e0e6b04b3e7e3f59f445cdc", kill_on_drop: false }`
[INFO] [stdout] a49119197810e71e1b4c125dc1c049687d56601c4e0e6b04b3e7e3f59f445cdc