[INFO] cloning repository https://github.com/jt-rose/rust_encrypt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jt-rose/rust_encrypt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjt-rose%2Frust_encrypt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjt-rose%2Frust_encrypt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eaa7ed59510997239c53a80d2fbb1bef4b88a349
[INFO] checking jt-rose/rust_encrypt against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjt-rose%2Frust_encrypt" "/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/jt-rose/rust_encrypt 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/jt-rose/rust_encrypt
[INFO] finished tweaking git repo https://github.com/jt-rose/rust_encrypt
[INFO] tweaked toml for git repo https://github.com/jt-rose/rust_encrypt written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jt-rose/rust_encrypt 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rsa v0.5.0
[INFO] [stderr]   Downloaded pkcs1 v0.2.4
[INFO] [stderr]   Downloaded libm v0.2.3
[INFO] [stderr]   Downloaded num-bigint-dig v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b626be7d43205b3a0e98edb4f1fede58a974f28522e59b6af1f0de82536bf02e
[INFO] running `Command { std: "docker" "start" "-a" "b626be7d43205b3a0e98edb4f1fede58a974f28522e59b6af1f0de82536bf02e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b626be7d43205b3a0e98edb4f1fede58a974f28522e59b6af1f0de82536bf02e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b626be7d43205b3a0e98edb4f1fede58a974f28522e59b6af1f0de82536bf02e", kill_on_drop: false }`
[INFO] [stdout] b626be7d43205b3a0e98edb4f1fede58a974f28522e59b6af1f0de82536bf02e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 606ce55a2aa967ccbf0fe99230486675f84e100d06284ec6f91f0a25a394c85e
[INFO] running `Command { std: "docker" "start" "-a" "606ce55a2aa967ccbf0fe99230486675f84e100d06284ec6f91f0a25a394c85e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling libm v0.2.3
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking const-oid v0.6.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking base64ct v1.1.1
[INFO] [stderr]    Compiling num-bigint-dig v0.7.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking pem-rfc7468 v0.2.4
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crypto-bigint v0.2.11
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking der v0.4.5
[INFO] [stderr]     Checking spki v0.4.1
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zeroize_derive v1.3.2
[INFO] [stderr]     Checking zeroize v1.4.3
[INFO] [stderr]     Checking pkcs1 v0.2.4
[INFO] [stderr]     Checking pkcs8 v0.7.6
[INFO] [stderr]     Checking rsa v0.5.0
[INFO] [stderr]     Checking encrypt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]  --> src/encryptor/rsa.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use base64;
[INFO] [stdout]   |     ^^^^^^ the item `base64` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]  --> src/encryptor/rsa.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use base64;
[INFO] [stdout]   |     ^^^^^^ the item `base64` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rot13`
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use encrypt::encryptor::{rot13, rsa, Cipher};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rot13`
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use encrypt::encryptor::{rot13, rsa, Cipher};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.50s
[INFO] running `Command { std: "docker" "inspect" "606ce55a2aa967ccbf0fe99230486675f84e100d06284ec6f91f0a25a394c85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "606ce55a2aa967ccbf0fe99230486675f84e100d06284ec6f91f0a25a394c85e", kill_on_drop: false }`
[INFO] [stdout] 606ce55a2aa967ccbf0fe99230486675f84e100d06284ec6f91f0a25a394c85e
[INFO] checking jt-rose/rust_encrypt against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjt-rose%2Frust_encrypt" "/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/jt-rose/rust_encrypt on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jt-rose/rust_encrypt
[INFO] finished tweaking git repo https://github.com/jt-rose/rust_encrypt
[INFO] tweaked toml for git repo https://github.com/jt-rose/rust_encrypt written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jt-rose/rust_encrypt 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09e00177b50b58aca2484c99886f6e094c4df4fedb802721b61a8bd0fb501ac1
[INFO] running `Command { std: "docker" "start" "-a" "09e00177b50b58aca2484c99886f6e094c4df4fedb802721b61a8bd0fb501ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09e00177b50b58aca2484c99886f6e094c4df4fedb802721b61a8bd0fb501ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09e00177b50b58aca2484c99886f6e094c4df4fedb802721b61a8bd0fb501ac1", kill_on_drop: false }`
[INFO] [stdout] 09e00177b50b58aca2484c99886f6e094c4df4fedb802721b61a8bd0fb501ac1
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71ac081ee17798e2b7f50e2b07c805fa680bf7061b81aa89843d15acd43276fc
[INFO] running `Command { std: "docker" "start" "-a" "71ac081ee17798e2b7f50e2b07c805fa680bf7061b81aa89843d15acd43276fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling libm v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking const-oid v0.6.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking base64ct v1.1.1
[INFO] [stderr]    Compiling num-bigint-dig v0.7.0
[INFO] [stderr]     Checking pem-rfc7468 v0.2.4
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crypto-bigint v0.2.11
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking der v0.4.5
[INFO] [stderr]     Checking spki v0.4.1
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zeroize_derive v1.3.2
[INFO] [stderr]     Checking zeroize v1.4.3
[INFO] [stderr]     Checking pkcs1 v0.2.4
[INFO] [stderr]     Checking pkcs8 v0.7.6
[INFO] [stderr]     Checking rsa v0.5.0
[INFO] [stderr]     Checking encrypt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]  --> src/encryptor/rsa.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use base64;
[INFO] [stdout]   |     ^^^^^^ the item `base64` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]  --> src/encryptor/rsa.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use base64;
[INFO] [stdout]   |     ^^^^^^ the item `base64` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rot13`
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use encrypt::encryptor::{rot13, rsa, Cipher};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rot13`
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use encrypt::encryptor::{rot13, rsa, Cipher};
[INFO] [stdout]   |                          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.55s
[INFO] running `Command { std: "docker" "inspect" "71ac081ee17798e2b7f50e2b07c805fa680bf7061b81aa89843d15acd43276fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ac081ee17798e2b7f50e2b07c805fa680bf7061b81aa89843d15acd43276fc", kill_on_drop: false }`
[INFO] [stdout] 71ac081ee17798e2b7f50e2b07c805fa680bf7061b81aa89843d15acd43276fc