[INFO] cloning repository https://github.com/divinusdracodominus/axolotl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/divinusdracodominus/axolotl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivinusdracodominus%2Faxolotl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivinusdracodominus%2Faxolotl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2870b69c89b252c35f3072c8e93bf680f26b7159
[INFO] testing divinusdracodominus/axolotl/2870b69c89b252c35f3072c8e93bf680f26b7159 against try#024495a232636f1f9407d7695b2be51edc2c51bd for pr-130285
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivinusdracodominus%2Faxolotl" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/divinusdracodominus/axolotl on toolchain 024495a232636f1f9407d7695b2be51edc2c51bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/divinusdracodominus/axolotl
[INFO] finished tweaking git repo https://github.com/divinusdracodominus/axolotl
[INFO] tweaked toml for git repo https://github.com/divinusdracodominus/axolotl written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/divinusdracodominus/axolotl 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" "+024495a232636f1f9407d7695b2be51edc2c51bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded err-derive v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8045015bb62d45512c430296e30ac42cd5060c27b72e72913cd2f7a5743f3932
[INFO] running `Command { std: "docker" "start" "-a" "8045015bb62d45512c430296e30ac42cd5060c27b72e72913cd2f7a5743f3932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8045015bb62d45512c430296e30ac42cd5060c27b72e72913cd2f7a5743f3932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8045015bb62d45512c430296e30ac42cd5060c27b72e72913cd2f7a5743f3932", kill_on_drop: false }`
[INFO] [stdout] 8045015bb62d45512c430296e30ac42cd5060c27b72e72913cd2f7a5743f3932
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76f25a2acb1b1404172774885d7a092d22f3b1c56cf1041fb438c1583a02188e
[INFO] running `Command { std: "docker" "start" "-a" "76f25a2acb1b1404172774885d7a092d22f3b1c56cf1041fb438c1583a02188e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling err-derive v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling nix v0.22.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling ron v0.6.4
[INFO] [stderr]    Compiling axolotl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `libc::c_char`
[INFO] [stdout]  --> src/runtime.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::c_char;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `execv`
[INFO] [stdout]  --> src/runtime.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     unistd::{execv, ftruncate},
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/runtime.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/runtime.rs:43:99
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub unsafe fn axolotl_exec<T: Serialize, P: AsRef<Path>, S: AsRef<str>>(value: &T, executable: P, args: &[S]) {
[INFO] [stdout]    |                                                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stability`, `arch`, `motherboard`, `operating_system`, and `backend` are never read
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Toolchain {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 4 |     stability: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     arch: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     motherboard: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     operating_system: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 8 |     backend: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ToolchainConfig {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 13 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/runtime.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     ftruncate(descriptor, 1000);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = ftruncate(descriptor, 1000);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.84s
[INFO] running `Command { std: "docker" "inspect" "76f25a2acb1b1404172774885d7a092d22f3b1c56cf1041fb438c1583a02188e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f25a2acb1b1404172774885d7a092d22f3b1c56cf1041fb438c1583a02188e", kill_on_drop: false }`
[INFO] [stdout] 76f25a2acb1b1404172774885d7a092d22f3b1c56cf1041fb438c1583a02188e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f215b851787e62739afb80a0a24cebb77b4c4f1aa5e2b15d6fa54602dad0d103
[INFO] running `Command { std: "docker" "start" "-a" "f215b851787e62739afb80a0a24cebb77b4c4f1aa5e2b15d6fa54602dad0d103", kill_on_drop: false }`
[INFO] [stderr]    Compiling axolotl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `libc::c_char`
[INFO] [stdout]  --> src/runtime.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::c_char;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `execv`
[INFO] [stdout]  --> src/runtime.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     unistd::{execv, ftruncate},
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/runtime.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/runtime.rs:43:99
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub unsafe fn axolotl_exec<T: Serialize, P: AsRef<Path>, S: AsRef<str>>(value: &T, executable: P, args: &[S]) {
[INFO] [stdout]    |                                                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stability`, `arch`, `motherboard`, `operating_system`, and `backend` are never read
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Toolchain {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 4 |     stability: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     arch: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     motherboard: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     operating_system: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 8 |     backend: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ToolchainConfig {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 13 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/runtime.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     ftruncate(descriptor, 1000);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = ftruncate(descriptor, 1000);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::c_char`
[INFO] [stdout]  --> src/runtime.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc::c_char;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `execv`
[INFO] [stdout]  --> src/runtime.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     unistd::{execv, ftruncate},
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/runtime.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/runtime.rs:43:99
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub unsafe fn axolotl_exec<T: Serialize, P: AsRef<Path>, S: AsRef<str>>(value: &T, executable: P, args: &[S]) {
[INFO] [stdout]    |                                                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stability`, `arch`, `motherboard`, `operating_system`, and `backend` are never read
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Toolchain {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 4 |     stability: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     arch: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     motherboard: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     operating_system: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 8 |     backend: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ToolchainConfig {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 13 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/runtime.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     ftruncate(descriptor, 1000);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = ftruncate(descriptor, 1000);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "f215b851787e62739afb80a0a24cebb77b4c4f1aa5e2b15d6fa54602dad0d103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f215b851787e62739afb80a0a24cebb77b4c4f1aa5e2b15d6fa54602dad0d103", kill_on_drop: false }`
[INFO] [stdout] f215b851787e62739afb80a0a24cebb77b4c4f1aa5e2b15d6fa54602dad0d103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfa89b5eacd4ceec3a5371175e64ddbc96cae64488337456636fc437d934edf0
[INFO] running `Command { std: "docker" "start" "-a" "dfa89b5eacd4ceec3a5371175e64ddbc96cae64488337456636fc437d934edf0", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `libc::c_char`
[INFO] [stderr]  --> src/runtime.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use libc::c_char;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `execv`
[INFO] [stderr]  --> src/runtime.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |     unistd::{execv, ftruncate},
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/runtime.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/runtime.rs:43:99
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub unsafe fn axolotl_exec<T: Serialize, P: AsRef<Path>, S: AsRef<str>>(value: &T, executable: P, args: &[S]) {
[INFO] [stderr]    |                                                                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `stability`, `arch`, `motherboard`, `operating_system`, and `backend` are never read
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Toolchain {
[INFO] [stderr]   |            --------- fields in this struct
[INFO] [stderr] 4 |     stability: String,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 5 |     arch: String,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 6 |     motherboard: String,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 7 |     operating_system: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 8 |     backend: String,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct ToolchainConfig {
[INFO] [stderr]    |            --------------- field in this struct
[INFO] [stderr] 13 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/runtime.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     ftruncate(descriptor, 1000);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let _ = ftruncate(descriptor, 1000);
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `axolotl` (lib) generated 7 warnings (run `cargo fix --lib -p axolotl` to apply 3 suggestions)
[INFO] [stderr] warning: `axolotl` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/axolotl-88a444d8286152a1)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests axolotl
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfa89b5eacd4ceec3a5371175e64ddbc96cae64488337456636fc437d934edf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa89b5eacd4ceec3a5371175e64ddbc96cae64488337456636fc437d934edf0", kill_on_drop: false }`
[INFO] [stdout] dfa89b5eacd4ceec3a5371175e64ddbc96cae64488337456636fc437d934edf0