[INFO] updating cached repository https://github.com/amty/magreader
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9517eb8dd8f39a6b7e90e63f38cb4d8a89237d62
[INFO] testing amty/magreader against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Famty%2Fmagreader" "work/builds/worker-10/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amty/magreader on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/amty/magreader
[INFO] finished tweaking git repo https://github.com/amty/magreader
[INFO] tweaked toml for git repo https://github.com/amty/magreader written to work/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/amty/magreader already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 6508a96ef37b03c7bbf3831acb44fbb44a6ee3ec9da02f143500880521f4023f
[INFO] running `"docker" "start" "-a" "6508a96ef37b03c7bbf3831acb44fbb44a6ee3ec9da02f143500880521f4023f"`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling pipeline v0.5.0
[INFO] [stderr]    Compiling regex-syntax v0.5.5
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling csv v1.0.0-beta.5
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]    Compiling markdown v0.2.0 (https://github.com/amty/markdown.rs#788aa512)
[INFO] [stderr]    Compiling export-mags v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:70:37
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 links = if let Some(mut ls) = links {
[INFO] [stderr]    |                                     ----^^
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:93:37
[INFO] [stderr]    |
[INFO] [stderr] 93 |                 links = if let Some(mut ls) = links {
[INFO] [stderr]    |                                     ----^^
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:127:24
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let (text, mut ls) = if let Some(mut ls) = links {
[INFO] [stderr]     |                        ----^^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:127:46
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let (text, mut ls) = if let Some(mut ls) = links {
[INFO] [stderr]     |                                              ----^^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.14s
[INFO] running `"docker" "inspect" "6508a96ef37b03c7bbf3831acb44fbb44a6ee3ec9da02f143500880521f4023f"`
[INFO] running `"docker" "rm" "-f" "6508a96ef37b03c7bbf3831acb44fbb44a6ee3ec9da02f143500880521f4023f"`
[INFO] [stdout] 6508a96ef37b03c7bbf3831acb44fbb44a6ee3ec9da02f143500880521f4023f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f4a795281ff7e15486afbce0a021e11f609fd452609ae2c5fc18325121fabda3
[INFO] running `"docker" "start" "-a" "f4a795281ff7e15486afbce0a021e11f609fd452609ae2c5fc18325121fabda3"`
[INFO] [stderr]    Compiling export-mags v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:70:37
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 links = if let Some(mut ls) = links {
[INFO] [stderr]    |                                     ----^^
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:93:37
[INFO] [stderr]    |
[INFO] [stderr] 93 |                 links = if let Some(mut ls) = links {
[INFO] [stderr]    |                                     ----^^
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:127:24
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let (text, mut ls) = if let Some(mut ls) = links {
[INFO] [stderr]     |                        ----^^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:127:46
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let (text, mut ls) = if let Some(mut ls) = links {
[INFO] [stderr]     |                                              ----^^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "f4a795281ff7e15486afbce0a021e11f609fd452609ae2c5fc18325121fabda3"`
[INFO] running `"docker" "rm" "-f" "f4a795281ff7e15486afbce0a021e11f609fd452609ae2c5fc18325121fabda3"`
[INFO] [stdout] f4a795281ff7e15486afbce0a021e11f609fd452609ae2c5fc18325121fabda3
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] aed4187b704db16ea68a5081445e67cdd83f56f05d344b74a444d0672d684ca9
[INFO] running `"docker" "start" "-a" "aed4187b704db16ea68a5081445e67cdd83f56f05d344b74a444d0672d684ca9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/export_mags-2e779bc816f06c20
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "aed4187b704db16ea68a5081445e67cdd83f56f05d344b74a444d0672d684ca9"`
[INFO] running `"docker" "rm" "-f" "aed4187b704db16ea68a5081445e67cdd83f56f05d344b74a444d0672d684ca9"`
[INFO] [stdout] aed4187b704db16ea68a5081445e67cdd83f56f05d344b74a444d0672d684ca9