[INFO] cloning repository https://github.com/zaphar/ucg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zaphar/ucg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ae4b910048fd6f1cbd7658d9f9ce922736317c7
[INFO] checking zaphar/ucg against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zaphar/ucg 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/zaphar/ucg
[INFO] finished tweaking git repo https://github.com/zaphar/ucg
[INFO] tweaked toml for git repo https://github.com/zaphar/ucg written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zaphar/ucg 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml v0.5.10
[INFO] [stderr]   Downloaded abortable_parser v0.2.3
[INFO] [stderr]   Downloaded fd-lock v3.0.8
[INFO] [stderr]   Downloaded nix v0.26.1
[INFO] [stderr]   Downloaded rustyline v10.1.0
[INFO] [stderr]   Downloaded serde_yaml v0.9.16
[INFO] [stderr]   Downloaded simple-error v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 76070683cca05ee9f43e8524d2373b291b64ade8850971d98c5cf000583fde41
[INFO] running `Command { std: "docker" "start" "-a" "76070683cca05ee9f43e8524d2373b291b64ade8850971d98c5cf000583fde41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76070683cca05ee9f43e8524d2373b291b64ade8850971d98c5cf000583fde41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76070683cca05ee9f43e8524d2373b291b64ade8850971d98c5cf000583fde41", kill_on_drop: false }`
[INFO] [stdout] 76070683cca05ee9f43e8524d2373b291b64ade8850971d98c5cf000583fde41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4fcefd6f3f92c50f3ce0eb7d968de550d27cded082927798163bd0a213895911
[INFO] running `Command { std: "docker" "start" "-a" "4fcefd6f3f92c50f3ce0eb7d968de550d27cded082927798163bd0a213895911", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling io-lifetimes v1.0.4
[INFO] [stderr]    Compiling rustix v0.36.16
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]     Checking unsafe-libyaml v0.2.10
[INFO] [stderr]     Checking unicode-segmentation v1.10.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking simple-error v0.2.3
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking base64 v0.21.0
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.26.1
[INFO] [stderr]    Compiling ucg v0.7.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.33.4
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking fd-lock v3.0.8
[INFO] [stderr]     Checking rustyline v10.1.0
[INFO] [stderr]     Checking toml v0.5.10
[INFO] [stderr]     Checking serde_yaml v0.9.16
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `abortable_parser` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use abortable_parser;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | extern crate abortable_parser;
[INFO] [stdout]    | ------------------------------ the item `abortable_parser` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/tokenizer/test.rs:5:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Result` is already imported here
[INFO] [stdout] 4 |
[INFO] [stdout] 5 | use abortable_parser::{Offsetable, Result, SliceIter};
[INFO] [stdout]   |                                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SliceIter` is imported redundantly
[INFO] [stdout]  --> src/tokenizer/test.rs:5:44
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `SliceIter` is already imported here
[INFO] [stdout] 4 |
[INFO] [stdout] 5 | use abortable_parser::{Offsetable, Result, SliceIter};
[INFO] [stdout]   |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OffsetStrIter` is imported redundantly
[INFO] [stdout]  --> src/tokenizer/test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `OffsetStrIter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use crate::iter::OffsetStrIter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]   --> src/build/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use atty;
[INFO] [stdout]    |     ^^^^ the item `atty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustyline` is imported redundantly
[INFO] [stdout]   --> src/build/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use rustyline;
[INFO] [stdout]    |     ^^^^^^^^^ the item `rustyline` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_error` is imported redundantly
[INFO] [stdout]   --> src/build/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use simple_error;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | extern crate simple_error;
[INFO] [stdout]    | -------------------------- the item `simple_error` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/build/ir.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/build/ir.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/build/opcode/error.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/build/opcode/convert.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/build/opcode/convert.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `abortable_parser` is imported redundantly
[INFO] [stdout]   --> src/ast/mod.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use abortable_parser;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | extern crate abortable_parser;
[INFO] [stdout]    | ------------------------------ the item `abortable_parser` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/build/opcode/vm.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/tokenizer/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/build/scope.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::AsRef;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]  --> src/build/scope.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/build/test.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/convert/b64.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Converter` is imported redundantly
[INFO] [stdout]    --> src/convert/exec.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |     use super::*;
[INFO] [stdout]     |         -------- the item `Converter` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 201 |     use crate::convert::traits::Converter;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]    --> src/convert/exec.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |     use super::*;
[INFO] [stdout]     |         -------- the item `std` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 203 |     use std;
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Cursor` is imported redundantly
[INFO] [stdout]    --> src/convert/exec.rs:204:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cursor` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 204 |     use std::io::Cursor;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/json.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/convert/json.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]   --> src/build/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use atty;
[INFO] [stdout]    |     ^^^^ the item `atty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustyline` is imported redundantly
[INFO] [stdout]   --> src/build/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use rustyline;
[INFO] [stdout]    |     ^^^^^^^^^ the item `rustyline` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/toml.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/convert/toml.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use toml;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | extern crate toml;
[INFO] [stdout]    | ------------------ the item `toml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_error` is imported redundantly
[INFO] [stdout]   --> src/build/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use simple_error;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | extern crate simple_error;
[INFO] [stdout]    | -------------------------- the item `simple_error` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/xml.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/build/ir.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/convert/yaml.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/convert/yaml.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/build/ir.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/convert/yaml.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/yamlmulti.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/io/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/build/opcode/error.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/build/opcode/convert.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/iter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/build/opcode/convert.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{From, TryFrom};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `abortable_parser` is imported redundantly
[INFO] [stdout]   --> src/parse/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use abortable_parser;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | extern crate abortable_parser;
[INFO] [stdout]    | ------------------------------ the item `abortable_parser` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/build/opcode/vm.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/build/scope.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::AsRef;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]  --> src/build/scope.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/convert/b64.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/exec.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/json.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/convert/json.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/toml.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/convert/toml.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use toml;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | extern crate toml;
[INFO] [stdout]    | ------------------ the item `toml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/xml.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/convert/yaml.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/convert/yaml.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::result::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/convert/yaml.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use serde_yaml;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]   --> src/convert/yamlmulti.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std;
[INFO] [stdout]    |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/io/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/iter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `abortable_parser` is imported redundantly
[INFO] [stdout]   --> src/parse/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use abortable_parser;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | extern crate abortable_parser;
[INFO] [stdout]    | ------------------------------ the item `abortable_parser` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/mod.rs:125:42
[INFO] [stdout]     |
[INFO] [stdout] 125 |             environment: self.environment.clone(),
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<Stdout, Stderr>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<Stdout, Stderr>>` 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] 125 -             environment: self.environment.clone(),
[INFO] [stdout] 125 +             environment: self.environment,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:424:66
[INFO] [stdout]     |
[INFO] [stdout] 424 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 424 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 424 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:441:66
[INFO] [stdout]     |
[INFO] [stdout] 441 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 441 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 441 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:473:66
[INFO] [stdout]     |
[INFO] [stdout] 473 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 473 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 473 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:536:66
[INFO] [stdout]     |
[INFO] [stdout] 536 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 536 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 536 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:562:66
[INFO] [stdout]     |
[INFO] [stdout] 562 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 562 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 562 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:584:66
[INFO] [stdout]     |
[INFO] [stdout] 584 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 584 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 584 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:687:66
[INFO] [stdout]     |
[INFO] [stdout] 687 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 687 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 687 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:704:66
[INFO] [stdout]     |
[INFO] [stdout] 704 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 704 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 704 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:717:66
[INFO] [stdout]     |
[INFO] [stdout] 717 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 717 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 717 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/vm.rs:549:78
[INFO] [stdout]     |
[INFO] [stdout] 549 |                 Self::fcall_impl(f, self.runtime.strict, &mut self.stack, env.clone(), &self.import_stack))?;
[INFO] [stdout]     |                                                                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 549 -                 Self::fcall_impl(f, self.runtime.strict, &mut self.stack, env.clone(), &self.import_stack))?;
[INFO] [stdout] 549 +                 Self::fcall_impl(f, self.runtime.strict, &mut self.stack, env, &self.import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/mod.rs:125:42
[INFO] [stdout]     |
[INFO] [stdout] 125 |             environment: self.environment.clone(),
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<Stdout, Stderr>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<Stdout, Stderr>>` 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] 125 -             environment: self.environment.clone(),
[INFO] [stdout] 125 +             environment: self.environment,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:424:66
[INFO] [stdout]     |
[INFO] [stdout] 424 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 424 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 424 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:441:66
[INFO] [stdout]     |
[INFO] [stdout] 441 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 441 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 441 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:473:66
[INFO] [stdout]     |
[INFO] [stdout] 473 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 473 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 473 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:536:66
[INFO] [stdout]     |
[INFO] [stdout] 536 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 536 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 536 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:562:66
[INFO] [stdout]     |
[INFO] [stdout] 562 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 562 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 562 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:584:66
[INFO] [stdout]     |
[INFO] [stdout] 584 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 584 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 584 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:687:66
[INFO] [stdout]     |
[INFO] [stdout] 687 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 687 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 687 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:704:66
[INFO] [stdout]     |
[INFO] [stdout] 704 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 704 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 704 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/runtime.rs:717:66
[INFO] [stdout]     |
[INFO] [stdout] 717 |                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout]     |                                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 717 -                         VM::fcall_impl(f, self.strict, stack, env.clone(), import_stack))?;
[INFO] [stdout] 717 +                         VM::fcall_impl(f, self.strict, stack, env, import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/build/opcode/vm.rs:549:78
[INFO] [stdout]     |
[INFO] [stdout] 549 |                 Self::fcall_impl(f, self.runtime.strict, &mut self.stack, env.clone(), &self.import_stack))?;
[INFO] [stdout]     |                                                                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `RefCell<Environment<O, E>>` does not implement `Clone`, so calling `clone` on `&RefCell<Environment<O, E>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 549 -                 Self::fcall_impl(f, self.runtime.strict, &mut self.stack, env.clone(), &self.import_stack))?;
[INFO] [stdout] 549 +                 Self::fcall_impl(f, self.runtime.strict, &mut self.stack, env, &self.import_stack))?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 47 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.64s
[INFO] running `Command { std: "docker" "inspect" "4fcefd6f3f92c50f3ce0eb7d968de550d27cded082927798163bd0a213895911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fcefd6f3f92c50f3ce0eb7d968de550d27cded082927798163bd0a213895911", kill_on_drop: false }`
[INFO] [stdout] 4fcefd6f3f92c50f3ce0eb7d968de550d27cded082927798163bd0a213895911