[INFO] cloning repository https://github.com/narayn60/matasano-solutions
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/narayn60/matasano-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4678796bdf6fe38a121eaae4e6c4fa2354a1fb9b
[INFO] checking narayn60/matasano-solutions against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarayn60%2Fmatasano-solutions" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/narayn60/matasano-solutions on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/narayn60/matasano-solutions
[INFO] finished tweaking git repo https://github.com/narayn60/matasano-solutions
[INFO] tweaked toml for git repo https://github.com/narayn60/matasano-solutions written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/narayn60/matasano-solutions already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: path `/workspace/builds/worker-6/source/src/Set1.rs` was erroneously implicitly accepted for binary `Set1`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1063b4eab59eddfea9fb42df48ac353bd8b66db0a18d2ef559232158d38b958
[INFO] running `"docker" "start" "-a" "d1063b4eab59eddfea9fb42df48ac353bd8b66db0a18d2ef559232158d38b958"`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/Set1.rs` was erroneously implicitly accepted for binary `Set1`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking Set1 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected identifier, found keyword `mod`
[INFO] [stderr]  --> src/Set1.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stderr]   |                         ^^^ expected identifier, found keyword
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{r#mod, ToBase64};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: expected identifier, found keyword `mod`
[INFO] [stderr]  --> src/Set1.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stderr]   |                         ^^^ expected identifier, found keyword
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{r#mod, ToBase64};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `serialize::base64`
[INFO] [stderr]  --> src/Set1.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stderr]   |                ^^^^^^ could not find `base64` in `serialize`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `base64`
[INFO] [stderr]   --> src/Set1.rs:28:76
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let output_base64 = input_hex.from_hex().unwrap().as_slice().to_base64(base64::STANDARD);
[INFO] [stderr]    |                                                                            ^^^^^^ use of undeclared type or module `base64`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/Set1.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate serialize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/Set1.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serialize::hex::FromHex;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/Set1.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serialize::hex::ToHex;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]  --> src/Set1.rs:9:36
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let challenge_string = String::from_str("49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d");
[INFO] [stderr]   |                                    ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]   |
[INFO] [stderr]   = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:10:32
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut expected = String::from_str("SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t");
[INFO] [stderr]    |                                ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:16:24
[INFO] [stderr]    |
[INFO] [stderr] 16 |     expected = String::from_str("746865206b696420646f6e277420706c6179");
[INFO] [stderr]    |                        ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let challenge_string1 = String::from_str("1c0111001f010100061a024b53535009181c");
[INFO] [stderr]    |                                     ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:18:37
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let challenge_string2 = String::from_str("686974207468652062756c6c277320657965");
[INFO] [stderr]    |                                     ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let output_base64 = input_hex.from_hex().unwrap().as_slice().to_base64(base64::STANDARD);
[INFO] [stderr]    |                                   ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `to_base64` found for type `&[u8]` in the current scope
[INFO] [stderr]   --> src/Set1.rs:28:66
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let output_base64 = input_hex.from_hex().unwrap().as_slice().to_base64(base64::STANDARD);
[INFO] [stderr]    |                                                                  ^^^^^^^^^ method not found in `&[u8]`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let string_1 = string_1.from_hex().unwrap();
[INFO] [stderr]    |                             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let string_2 = string_2.from_hex().unwrap();
[INFO] [stderr]    |                             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let result = output_base64.to_hex();
[INFO] [stderr]    |                                ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 16 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0433, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error[E0432]: unresolved import `serialize::base64`
[INFO] [stderr]  --> src/Set1.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serialize::base64::{mod, ToBase64};
[INFO] [stderr]   |                ^^^^^^ could not find `base64` in `serialize`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `base64`
[INFO] [stderr]   --> src/Set1.rs:28:76
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let output_base64 = input_hex.from_hex().unwrap().as_slice().to_base64(base64::STANDARD);
[INFO] [stderr]    |                                                                            ^^^^^^ use of undeclared type or module `base64`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/Set1.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate serialize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/Set1.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serialize::hex::FromHex;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/Set1.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serialize::hex::ToHex;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `Set1`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]  --> src/Set1.rs:9:36
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let challenge_string = String::from_str("49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d");
[INFO] [stderr]   |                                    ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]   |
[INFO] [stderr]   = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::str::FromStr;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:10:32
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut expected = String::from_str("SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t");
[INFO] [stderr]    |                                ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:16:24
[INFO] [stderr]    |
[INFO] [stderr] 16 |     expected = String::from_str("746865206b696420646f6e277420706c6179");
[INFO] [stderr]    |                        ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let challenge_string1 = String::from_str("1c0111001f010100061a024b53535009181c");
[INFO] [stderr]    |                                     ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for type `std::string::String` in the current scope
[INFO] [stderr]   --> src/Set1.rs:18:37
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let challenge_string2 = String::from_str("686974207468652062756c6c277320657965");
[INFO] [stderr]    |                                     ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::str::FromStr;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let output_base64 = input_hex.from_hex().unwrap().as_slice().to_base64(base64::STANDARD);
[INFO] [stderr]    |                                   ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `to_base64` found for type `&[u8]` in the current scope
[INFO] [stderr]   --> src/Set1.rs:28:66
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let output_base64 = input_hex.from_hex().unwrap().as_slice().to_base64(base64::STANDARD);
[INFO] [stderr]    |                                                                  ^^^^^^^^^ method not found in `&[u8]`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let string_1 = string_1.from_hex().unwrap();
[INFO] [stderr]    |                             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let string_2 = string_2.from_hex().unwrap();
[INFO] [stderr]    |                             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/Set1.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let result = output_base64.to_hex();
[INFO] [stderr]    |                                ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 16 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0433, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `Set1`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d1063b4eab59eddfea9fb42df48ac353bd8b66db0a18d2ef559232158d38b958"`
[INFO] running `"docker" "rm" "-f" "d1063b4eab59eddfea9fb42df48ac353bd8b66db0a18d2ef559232158d38b958"`
[INFO] [stdout] d1063b4eab59eddfea9fb42df48ac353bd8b66db0a18d2ef559232158d38b958